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Files from Ubuntu

Email addresssecurity at ubuntu.com
First Active2004-10-28
Last Active2021-05-14
Ubuntu Security Notice USN-4954-1
Posted May 14, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4954-1 - Jason Royes and Samuel Dytrych discovered that the memcpy implementation for 32 bit ARM processors in the GNU C Library contained an integer underflow vulnerability. An attacker could possibly use this to cause a denial of service or execute arbitrary code. It was discovered that the POSIX regex implementation in the GNU C Library did not properly parse alternatives. An attacker could use this to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary
systems | linux, osx, ubuntu
advisories | CVE-2009-5155, CVE-2020-6096
MD5 | bf1be2fa5ed0acab1c981917d5b783b4
Ubuntu Security Notice USN-4953-1
Posted May 14, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4953-1 - Sean Boran discovered that AWStats incorrectly filtered certain parameters. A remote attacker could possibly use this issue to execute arbitrary code. It was discovered that AWStats incorrectly filtered certain parameters. A remote attacker could possibly use this issue to access sensitive information.

tags | advisory, remote, arbitrary
systems | linux, ubuntu
advisories | CVE-2017-1000501, CVE-2020-29600, CVE-2020-35176
MD5 | 3aace51e610892c6e72b5665dc467353
Ubuntu Security Notice USN-4952-1
Posted May 13, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4952-1 - Multiple security issues were discovered in MySQL and this update includes new upstream MySQL versions to fix these issues. MySQL has been updated to 8.0.25 in Ubuntu 20.04 LTS, Ubuntu 20.10, and Ubuntu 21.04. Ubuntu 18.04 LTS has been updated to MySQL 5.7.34. In addition to security fixes, the updated packages contain bug fixes, new features, and possibly incompatible changes.

tags | advisory
systems | linux, ubuntu
advisories | CVE-2021-2146, CVE-2021-2166, CVE-2021-2172, CVE-2021-2194, CVE-2021-2208, CVE-2021-2226, CVE-2021-2293, CVE-2021-2301, CVE-2021-2308
MD5 | 0d0227bf3d91b0c638d82a4eb8dfac04
Ubuntu Security Notice USN-4932-2
Posted May 13, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4932-2 - USN-4932-1 fixed a vulnerability in Django. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. It was discovered that Django incorrectly handled certain filenames. A remote attacker could possibly use this issue to create or overwrite files in unexpected directories. Various other issues were also addressed.

tags | advisory, remote
systems | linux, ubuntu
advisories | CVE-2021-31542
MD5 | 154fb54d376a39328dac652b07c44eee
Ubuntu Security Notice USN-4951-1
Posted May 12, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4951-1 - Anton Lydike discovered that Flatpak did not properly handle special tokens in desktop files. An attacker could use this to specially craft a Flatpak application that could escape sandbox confinement.

tags | advisory
systems | linux, ubuntu
advisories | CVE-2021-21381
MD5 | 2a831326281e4053b358126024f846a4
Ubuntu Security Notice USN-4949-1
Posted May 12, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4949-1 - Ryota Shiga discovered that the eBPF implementation in the Linux kernel did not properly verify that a BPF program only reserved as much memory for a ring buffer as was allocated. A local attacker could use this to cause a denial of service or execute arbitrary code. Manfred Paul discovered that the eBPF implementation in the Linux kernel did not properly track bounds on bitwise operations. A local attacker could use this to cause a denial of service or execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2020-25639, CVE-2021-26930, CVE-2021-26931, CVE-2021-28375, CVE-2021-29264, CVE-2021-29265, CVE-2021-29266, CVE-2021-29646, CVE-2021-29650, CVE-2021-3489, CVE-2021-3490, CVE-2021-3491
MD5 | 46b90aa11862dc0daecfda0276fbf1cd
Ubuntu Security Notice USN-4948-1
Posted May 12, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4948-1 - Ryota Shiga discovered that the eBPF implementation in the Linux kernel did not properly verify that a BPF program only reserved as much memory for a ring buffer as was allocated. A local attacker could use this to cause a denial of service or execute arbitrary code. Manfred Paul discovered that the eBPF implementation in the Linux kernel did not properly track bounds on bitwise operations. A local attacker could use this to cause a denial of service or execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2020-25670, CVE-2021-28688, CVE-2021-28951, CVE-2021-28952, CVE-2021-28964, CVE-2021-28971, CVE-2021-28972, CVE-2021-29264, CVE-2021-29266, CVE-2021-29646, CVE-2021-29647, CVE-2021-29649, CVE-2021-29650, CVE-2021-29657, CVE-2021-31916, CVE-2021-3483, CVE-2021-3489, CVE-2021-3490, CVE-2021-3491
MD5 | 151d9671a4c69f74d2e7803115cefc7b
Ubuntu Security Notice USN-4950-1
Posted May 12, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4950-1 - Ryota Shiga discovered that the eBPF implementation in the Linux kernel did not properly verify that a BPF program only reserved as much memory for a ring buffer as was allocated. A local attacker could use this to cause a denial of service or execute arbitrary code. Manfred Paul discovered that the eBPF implementation in the Linux kernel did not properly track bounds on bitwise operations. A local attacker could use this to cause a denial of service or execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2021-3489, CVE-2021-3490, CVE-2021-3491
MD5 | 49528c585e4106f35517c8af7ce16fc7
Ubuntu Security Notice USN-4947-1
Posted May 12, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4947-1 - Kiyin discovered that the x25 implementation in the Linux kernel contained overflows when handling addresses from user space. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that the fastrpc driver in the Linux kernel did not prevent user space applications from sending kernel RPC messages. A local attacker could possibly use this to gain elevated privileges. Various other issues were also addressed.

tags | advisory, denial of service, overflow, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2020-35519, CVE-2021-28375, CVE-2021-29646, CVE-2021-29650, CVE-2021-30002
MD5 | df5deb01dc1a7d58d100d89194024300
Ubuntu Security Notice USN-4946-1
Posted May 12, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4946-1 - It was discovered that the DRM subsystem in the Linux kernel contained double-free vulnerabilities. A privileged attacker could possibly use this to cause a denial of service or possibly execute arbitrary code. Olivier Benjamin, Norbert Manthey, Martin Mazein, and Jan H. Schoenherr discovered that the Xen paravirtualization backend in the Linux kernel did not properly propagate errors to frontend drivers in some situations. An attacker in a guest VM could possibly use this to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2021-20292, CVE-2021-26930, CVE-2021-26931, CVE-2021-28038, CVE-2021-28688, CVE-2021-29264, CVE-2021-29265, CVE-2021-29650, CVE-2021-30002
MD5 | 50ba1d23637af4726e875b2987d5e252
Ubuntu Security Notice USN-4945-1
Posted May 12, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4945-1 - It was discovered that the Nouveau GPU driver in the Linux kernel did not properly handle error conditions in some situations. A local attacker could use this to cause a denial of service. Jan Beulich discovered that the Xen netback backend in the Linux kernel did not properly handle certain error conditions under paravirtualization. An attacker in a guest VM could possibly use this to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2020-25639, CVE-2021-28038, CVE-2021-28375, CVE-2021-28660, CVE-2021-29265, CVE-2021-29650, CVE-2021-30002
MD5 | cf8a7827b1c14f7183d67f60c0835edb
Ubuntu Security Notice USN-4944-1
Posted May 11, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4944-1 - This update fixed multiple vulnerabilities in MariaDB. Ubuntu 18.04 LTS has been updated to MariaDB 10.1.48. Ubuntu 20.04 LTS has been updated to MariaDB 10.3.29. Ubuntu 20.10 has been updated to MariaDB 10.3.29. Ubuntu 21.04 has been updated to MariaDB 10.5.10.

tags | advisory, vulnerability
systems | linux, ubuntu
MD5 | 0818aacd2588fdf77c07763a45e5a4f6
Ubuntu Security Notice USN-4943-1
Posted May 11, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4943-1 - Zhihong Tian and Hui Lu found that XStream was vulnerable to remote code execution. A remote attacker could run arbitrary shell commands by manipulating the processed input stream. This issue affected only affected Ubuntu 20.10. It was discovered that XStream was vulnerable to server-side forgery attacks. A remote attacker could request data from internal resources that are not publicly available only by manipulating the processed input stream. This issue only affected Ubuntu 20.10. Various other issues were also addressed.

tags | advisory, remote, arbitrary, shell, code execution
systems | linux, ubuntu
advisories | CVE-2020-26217, CVE-2020-26258, CVE-2020-26259, CVE-2021-21342, CVE-2021-21344, CVE-2021-21345, CVE-2021-21346, CVE-2021-21348, CVE-2021-21349, CVE-2021-21350
MD5 | a565fe2178a44c21cfecd0d125585112
Ubuntu Security Notice USN-4942-1
Posted May 11, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4942-1 - A race condition was discovered in Web Render Components. If a user were tricked into opening a specially crafted website, an attacker could potentially exploit this to execute arbitrary code.

tags | advisory, web, arbitrary
systems | linux, ubuntu
advisories | CVE-2021-29952
MD5 | fa26ce0ed3531bf64ac95fbb16f4270f
Ubuntu Security Notice USN-4941-1
Posted May 11, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4941-1 - It was discovered that Exiv2 incorrectly handled certain images. An attacker could possibly use this issue to execute arbitrary code or cause a crash. It was discovered that Exiv2 incorrectly handled certain images. An attacker could possibly use this issue to cause a denial of service. It was discovered that Exiv2 incorrectly handled certain images. An attacker could possibly use this issue to execute arbitrary code or cause a crash. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2021-29457, CVE-2021-3482
MD5 | c00f22b7ee92365c3506b1083a92e48b
Ubuntu Security Notice USN-4940-1
Posted May 10, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4940-1 - It was discovered that PyYAML incorrectly handled untrusted YAML files with the FullLoader loader. A remote attacker could possibly use this issue to execute arbitrary code.

tags | advisory, remote, arbitrary
systems | linux, ubuntu
advisories | CVE-2020-14343
MD5 | 5c9054e5dcb84fcca5e0b7bb231e1dfd
Ubuntu Security Notice USN-4939-1
Posted May 10, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4939-1 - A large number of security issues were discovered in the WebKitGTK Web and JavaScript engines. If a user were tricked into viewing a malicious website, a remote attacker could exploit a variety of issues related to web browser security, including cross-site scripting attacks, denial of service attacks, and arbitrary code execution.

tags | advisory, remote, web, denial of service, arbitrary, javascript, code execution, xss
systems | linux, ubuntu
advisories | CVE-2021-1788
MD5 | af4558d62abbfd5bae4e9822b097ced0
Ubuntu Security Notice USN-4938-1
Posted May 6, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4938-1 - It was discovered that Unbound contained multiple security issues. A remote attacker could possibly use these issues to cause a denial of service, inject arbitrary commands, execute arbitrary code, and overwrite local files.

tags | advisory, remote, denial of service, arbitrary, local
systems | linux, ubuntu
advisories | CVE-2019-25031, CVE-2019-25035, CVE-2019-25039, CVE-2020-28935
MD5 | 7cbc6ff7f46d7928484a4e834e459fb3
Ubuntu Security Notice USN-4936-1
Posted May 6, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4936-1 - Multiple security issues were discovered in Thunderbird. If a user were tricked into opening a specially crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information, or execute arbitrary code. It was discovered that Thunderbird may keep key material in memory in some circumstances. A local attacker could potentially exploit this to obtain private keys. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, local
systems | linux, ubuntu
advisories | CVE-2021-23968, CVE-2021-23969, CVE-2021-23973, CVE-2021-29950
MD5 | 6267c7c4cad00ab2f62f75f37a6613c0
Ubuntu Security Notice USN-4937-1
Posted May 6, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4937-1 - Ondrej Holy discovered that GNOME Autoar could extract files outside of the intended directory. If a user were tricked into extracting a specially crafted archive, a remote attacker could create files in arbitrary locations, possibly leading to code execution.

tags | advisory, remote, arbitrary, code execution
systems | linux, ubuntu
advisories | CVE-2021-28650
MD5 | 1ce6ba4e9126d4f4a6fd550fa9b85f39
Ubuntu Security Notice USN-4934-2
Posted May 6, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4934-2 - USN-4934-1 fixed several vulnerabilities in Exim. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. CVE-2020-28026 only affected Ubuntu 16.04 ESM. It was discovered that Exim contained multiple security issues. An attacker could use these issues to cause a denial of service, execute arbitrary code remotely, obtain sensitive information, or escalate local privileges. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2020-28007, CVE-2020-28012, CVE-2020-28016, CVE-2020-28024, CVE-2020-28026
MD5 | d1328f444212f331072a69abfd628772
Ubuntu Security Notice USN-4935-1
Posted May 4, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4935-1 - It was discovered that the NVIDIA GPU display driver for the Linux kernel incorrectly performed access control. A local attacker could use this issue to cause a denial of service, expose sensitive information, or escalate privileges. It was discovered that the NVIDIA GPU display driver for the Linux kernel incorrectly performed reference counting. A local attacker could use this issue to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2021-1076, CVE-2021-1077
MD5 | 0c0bac2410d9243af4b9f3f472dfdf2f
Ubuntu Security Notice USN-4934-1
Posted May 4, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4934-1 - It was discovered that Exim contained multiple security issues. An attacker could use these issues to cause a denial of service, execute arbitrary code remotely, obtain sensitive information, or escalate local privileges.

tags | advisory, denial of service, arbitrary, local
systems | linux, ubuntu
advisories | CVE-2020-28007, CVE-2020-28011, CVE-2020-28015, CVE-2020-28019, CVE-2020-28023, CVE-2021-27216
MD5 | 00c0c984699824e4a280630e72347901
Ubuntu Security Notice USN-4932-1
Posted May 4, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4932-1 - It was discovered that Django incorrectly handled certain filenames. A remote attacker could possibly use this issue to create or overwrite files in unexpected directories.

tags | advisory, remote
systems | linux, ubuntu
advisories | CVE-2021-31542
MD5 | e30dd2745c21882baa62f2cb57551cf5
Ubuntu Security Notice USN-4933-1
Posted May 4, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4933-1 - It was discovered that OpenVPN incorrectly handled certain data channel v2 packets. A remote attacker could possibly use this issue to inject packets using a victim's peer-id. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. It was discovered that OpenVPN incorrectly handled deferred authentication. When a server is configured to use deferred authentication, a remote attacker could possibly use this issue to bypass authentication and access control channel data. Various other issues were also addressed.

tags | advisory, remote
systems | linux, ubuntu
advisories | CVE-2020-11810, CVE-2020-15078
MD5 | 278580c58157ac4cc5649f55cf55cd6c
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