Ubuntu Security Notice 4896-2 - USN-4896-1 fixed a vulnerability in lxml. This update provides the corresponding update for Ubuntu 14.04 ESM. It was discovered that lxml incorrectly handled certain HTML attributes. A remote attacker could possibly use this issue to perform cross-site scripting attacks. Various other issues were also addressed.
e4f2f008e2cdcc1460a0b818e3b91206Ubuntu Security Notice 4903-1 - Viktor Szakats discovered that curl did not strip off user credentials from referrer header fields. A remote attacker could possibly use this issue to obtain sensitive information.
dbdf4b4dd72c03617d13968ae01c2494Ubuntu Security Notice 4901-1 - Adam Nichols discovered that heap overflows existed in the iSCSI subsystem in the Linux kernel. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that the LIO SCSI target implementation in the Linux kernel performed insufficient identifier checking in certain XCOPY requests. An attacker with access to at least one LUN in a multiple backstore environment could use this to expose sensitive information or modify data. Various other issues were also addressed.
b8d1d869928353cf7b3b1efb89dd3c8dUbuntu Security Notice 4902-1 - Dennis Brinkrolf discovered that Django incorrectly handled certain filenames. A remote attacker could possibly use this issue to create or overwrite files in unexpected directories.
6fb4afa701c67bbfc2606b1a826d5550Ubuntu Security Notice 4561-2 - USN-4561-1 fixed vulnerabilities in Rack. This update provides the corresponding update for Ubuntu 16.04 LTS, Ubuntu 20.04 LTS and Ubuntu 20.10. It was discovered that Rack incorrectly handled certain paths. An attacker could possibly use this issue to obtain sensitive information. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. Various other issues were also addressed.
04337f9d1336ac329d86fe6c1373cc09Ubuntu Security Notice 4900-1 - It was discovered that OpenEXR incorrectly handled certain malformed EXR image files. If a user were tricked into opening a crafted EXR image file, a remote attacker could cause a denial of service, or possibly execute arbitrary code.
22c7345367e0c3c848f48020433aace9This Metasploit module leverages an authentication bypass and directory traversal vulnerabilities in Saltstack Salt's REST API to execute commands remotely on the master as the root user. Every 60 seconds, salt-master service performs a maintenance process check that reloads and executes all the grains on the master, including custom grain modules in the Extension Module directory. So, this module simply creates a Python script at this location and waits for it to be executed. The time interval is set to 60 seconds by default but can be changed in the master configuration file with the loop_interval option. Note that, if an administrator executes commands locally on the master, the maintenance process check will also be performed. It has been fixed in the following installation packages: 3002.5, 3001.6 and 3000.8. Also, a patch is available for the following versions: 3002.2, 3001.4, 3000.6, 2019.2.8, 2019.2.5, 2018.3.5, 2017.7.8, 2016.11.10, 2016.11.6, 2016.11.5, 2016.11.3, 2016.3.8, 2016.3.6, 2016.3.4, 2015.8.13 and 2015.8.10. This module has been tested successfully against versions 3001.4, 3002 and 3002.2 on Ubuntu 18.04.
c836d9acbeb076642702599310fe13a4Ubuntu Security Notice 4899-1 - Damian Lukowski discovered that SpamAssassin incorrectly handled certain CF files. If a user or automated system were tricked into using a specially- crafted CF file, a remote attacker could possibly run arbitrary code.
dbd6e8e06d2d1fef4a9f91f0e3ace87eUbuntu Security Notice 4898-1 - Viktor Szakats discovered that curl did not strip off user credentials from referrer header fields. A remote attacker could possibly use this issue to obtain sensitive information. Mingtao Yang discovered that curl incorrectly handled session tickets when using an HTTPS proxy. A remote attacker in control of an HTTPS proxy could use this issue to bypass certificate checks and intercept communications. This issue only affected Ubuntu 20.04 LTS and Ubuntu 20.10. Various other issues were also addressed.
231654afdd07d6769fa7452e76aff9abUbuntu Security Notice 4897-1 - Ben Caller discovered that Pygments incorrectly handled parsing certain files. If a user or automated system were tricked into parsing a specially crafted file, a remote attacker could cause Pygments to hang or consume resources, resulting in a denial of service.
da06c873044e900cf790a50e5d2b52d1Ubuntu Security Notice 4896-1 - It was discovered that lxml incorrectly handled certain HTML attributes. A remote attacker could possibly use this issue to perform cross-site scripting attacks.
c33ea5822b285f067c1e517b1590672fUbuntu Security Notice 4895-1 - Alex Rousskov and Amit Klein discovered that Squid incorrectly handled certain Content-Length headers. A remote attacker could possibly use this issue to perform an HTTP request smuggling attack, resulting in cache poisoning. This issue only affected Ubuntu 20.04 LTS. Jianjun Chen discovered that Squid incorrectly validated certain input. A remote attacker could use this issue to perform HTTP Request Smuggling and possibly access services forbidden by the security controls. Various other issues were also addressed.
1cebe622843beb614b653077f5a4fca8Ubuntu Security Notice 4894-1 - 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.
4e22d60fd6aa436f1afcb95822fbbce6Ubuntu Security Notice 4893-1 - Multiple security issues were discovered in Firefox. If a user were tricked into opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information, or execute arbitrary code. It was discovered that extensions could open popup windows with control of the window title in some circumstances. If a user were tricked into installing a specially crafted extension, an attacker could potentially exploit this to spook a website and trick the user into providing credentials. Various other issues were also addressed.
361f6d2ac9ae9e3ba90818da079bb556Ubuntu Security Notice 4888-2 - USN-4888-1 fixed several vulnerabilities in ldb. This update provides the corresponding update for Ubuntu 14.04 ESM. Douglas Bagnall discovered that ldb, when used with Samba, incorrectly handled certain LDAP attributes. A remote attacker could possibly use this issue to cause the LDAP server to crash, resulting in a denial of service. Douglas Bagnall discovered that ldb, when used with Samba, incorrectly handled certain DN strings. A remote attacker could use this issue to cause the LDAP server to crash, resulting in a denial of service, or possibly execute arbitrary code. Various other issues were also addressed.
a7edc38f2801676f33f9cbf0c9e31080Ubuntu Security Notice 3685-2 - USN-3685-1 fixed a vulnerability in Ruby. The fix for CVE-2017-0903 introduced a regression in Ruby. This update fixes the problem.
f156e986c66dcd65f01f2e7c3812a8feUbuntu Security Notice 4891-1 - It was discovered that OpenSSL incorrectly handled certain renegotiation ClientHello messages. A remote attacker could use this issue to cause OpenSSL to crash, resulting in a denial of service, or possibly execute arbitrary code.
65dc6a577fcb68c0413c66300d99e501Ubuntu Security Notice 4890-1 - Piotr Krysiuk discovered that the BPF subsystem in the Linux kernel did not properly compute a speculative execution limit on pointer arithmetic in some situations. A local attacker could use this to expose sensitive information. Piotr Krysiuk discovered that the BPF subsystem in the Linux kernel did not properly apply speculative execution limits on some pointer types. A local attacker could use this to expose sensitive information. Various other issues were also addressed.
99fda04e62a9dedd76b21402a376b8adUbuntu Security Notice 4889-1 - Adam Nichols discovered that heap overflows existed in the iSCSI subsystem in the Linux kernel. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Adam Nichols discovered that the iSCSI subsystem in the Linux kernel did not properly restrict access to iSCSI transport handles. A local attacker could use this to cause a denial of service or expose sensitive information. Various other issues were also addressed.
96a483ce597a7b17996c0efe3f5a9d19Ubuntu Security Notice 4888-1 - Douglas Bagnall discovered that ldb, when used with Samba, incorrectly handled certain LDAP attributes. A remote attacker could possibly use this issue to cause the LDAP server to crash, resulting in a denial of service. Douglas Bagnall discovered that ldb, when used with Samba, incorrectly handled certain DN strings. A remote attacker could use this issue to cause the LDAP server to crash, resulting in a denial of service, or possibly execute arbitrary code. Various other issues were also addressed.
68476cbff2be3b86caf597a6c57630f2Ubuntu Security Notice 4887-1 - De4dCr0w of 360 Alpha Lab discovered that the BPF verifier in the Linux kernel did not properly handle mod32 destination register truncation when the source register was known to be 0. A local attacker could use this to expose sensitive information or possibly execute arbitrary code. Adam Nichols discovered that heap overflows existed in the iSCSI subsystem in the Linux kernel. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.
ec10d1a53d4fcdd31e305a6e8e3837d5Ubuntu Security Notice 4886-1 - It was discovered that Privoxy incorrectly handled CGI requests. An attacker could possibly use this issue to cause a denial of service or obtain sensitive information. It was discovered that Privoxy incorrectly handled certain regular expressions. An attacker could possibly use this issue to cause a denial of service or obtain sensitive information. Various other issues were also addressed.
8a08b9bbf58d739ee350ef39d3a2cc6bUbuntu Security Notice 4885-1 - It was discovered that Pygments incorrectly handled parsing SML files. If a user or automated system were tricked into parsing a specially crafted SML file, a remote attacker could cause Pygments to hang, resulting in a denial of service.
a3a85071b4f559e38a297f2f2c2cd26bUbuntu Security Notice 4884-1 - Loris Reiff discovered that the BPF implementation in the Linux kernel did not properly validate attributes in the getsockopt BPF hook. A local attacker could possibly use this to cause a denial of service. It was discovered that the priority inheritance futex implementation in the Linux kernel contained a race condition, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.
d65259f1229a869c8e40f8221cabfb17Ubuntu Security Notice 4883-1 - Adam Nichols discovered that heap overflows existed in the iSCSI subsystem in the Linux kernel. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Adam Nichols discovered that the iSCSI subsystem in the Linux kernel did not properly restrict access to iSCSI transport handles. A local attacker could use this to cause a denial of service or expose sensitive information. Various other issues were also addressed.
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