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CVE-2022-3437

Status Candidate

Overview

A heap-based buffer overflow vulnerability was found in Samba within the GSSAPI unwrap_des() and unwrap_des3() routines of Heimdal. The DES and Triple-DES decryption routines in the Heimdal GSSAPI library allow a length-limited write buffer overflow on malloc() allocated memory when presented with a maliciously small packet. This flaw allows a remote user to send specially crafted malicious data to the application, possibly resulting in a denial of service (DoS) attack.

Related Files

Debian Security Advisory 5647-1
Posted Mar 25, 2024
Authored by Debian | Site debian.org

Debian Linux Security Advisory 5647-1 - Several vulnerabilities have been discovered in Samba, a SMB/CIFS file, print, and login server for Unix, which might result in denial of service or information disclosure.

tags | advisory, denial of service, vulnerability, info disclosure
systems | linux, unix, debian
advisories | CVE-2022-2127, CVE-2022-3437, CVE-2023-34966, CVE-2023-34967, CVE-2023-34968, CVE-2023-4091
SHA-256 | 1bf3eff1b405cc8734e78a924bf59118ea64667832f1c6ee614a890520f6a767
Gentoo Linux Security Advisory 202310-06
Posted Oct 9, 2023
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202310-6 - Multiple vulnerabilities have been discovered in Heimdal, the worst of which could lead to remote code execution on a KDC. Versions greater than or equal to 7.8.0-r1 are affected.

tags | advisory, remote, vulnerability, code execution
systems | linux, gentoo
advisories | CVE-2019-14870, CVE-2021-44758, CVE-2022-3437, CVE-2022-3671, CVE-2022-41916, CVE-2022-42898, CVE-2022-44640, CVE-2022-44758, CVE-2022-45142
SHA-256 | 27611271da9764cfeb6bf4345cc8b0a457073005b818ba42fe2a3f1b4b278d83
Ubuntu Security Notice USN-5936-1
Posted Mar 8, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5936-1 - Evgeny Legerov discovered that Samba incorrectly handled buffers in certain GSSAPI routines of Heimdal. A remote attacker could possibly use this issue to cause Samba to crash, resulting in a denial of service. Tom Tervoort discovered that Samba incorrectly used weak rc4-hmac Kerberos keys. A remote attacker could possibly use this issue to elevate privileges.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2022-3437, CVE-2022-38023, CVE-2022-42898, CVE-2022-45141
SHA-256 | 5e8eabbc49599e8552ae631bd9c0e93e1ff9a293b7d443dd0d70363a66b8f346
Ubuntu Security Notice USN-5822-2
Posted Jan 27, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5822-2 - USN-5822-1 fixed vulnerabilities in Samba. The update for Ubuntu 20.04 LTS introduced regressions in certain environments. Pending investigation of these regressions, this update temporarily reverts the security fixes. It was discovered that Samba incorrectly handled the bad password count logic. It was discovered that Samba supported weak RC4/HMAC-MD5 in NetLogon Secure Channel. Greg Hudson discovered that Samba incorrectly handled PAC parsing. Joseph Sutton discovered that Samba could be forced to issue rc4-hmac encrypted Kerberos tickets.

tags | advisory, vulnerability
systems | linux, ubuntu
advisories | CVE-2021-20251, CVE-2022-3437, CVE-2022-38023, CVE-2022-42898, CVE-2022-45141
SHA-256 | f718e90d7add248ca99e3552b0f274b6f861ca5ceefde619cf3bde7fa83d130a
Ubuntu Security Notice USN-5822-1
Posted Jan 24, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5822-1 - It was discovered that Samba incorrectly handled the bad password count logic. A remote attacker could possibly use this issue to bypass bad passwords lockouts. This issue was only addressed in Ubuntu 22.10. Evgeny Legerov discovered that Samba incorrectly handled buffers in certain GSSAPI routines of Heimdal. A remote attacker could possibly use this issue to cause Samba to crash, resulting in a denial of service.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2021-20251, CVE-2022-3437, CVE-2022-38023, CVE-2022-42898, CVE-2022-45141
SHA-256 | 7e28dc77ffbc9a0bdb6d12d1db8027cea88238b892667a9f4f8b17fd154d8b4f
Ubuntu Security Notice USN-5800-1
Posted Jan 13, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5800-1 - It was discovered that Heimdal incorrectly handled certain SPNEGO tokens. A remote attacker could possibly use this issue to cause a denial of service. Evgeny Legerov discovered that Heimdal incorrectly handled memory when performing certain DES decryption operations. A remote attacker could use this issue to cause a denial of service, or possibly execute arbitrary code.

tags | advisory, remote, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2021-44758, CVE-2022-3437, CVE-2022-42898, CVE-2022-44640
SHA-256 | b0e2703f42318fc7c0a4e60c767ce87190f7c37446b669112673f0af14942855
Debian Security Advisory 5287-1
Posted Nov 23, 2022
Authored by Debian | Site debian.org

Debian Linux Security Advisory 5287-1 - Several vulnerabilities were discovered in Heimdal, an implementation of Kerberos 5 that aims to be compatible with MIT Kerberos.

tags | advisory, vulnerability
systems | linux, debian
advisories | CVE-2021-3671, CVE-2021-44758, CVE-2022-3437, CVE-2022-41916, CVE-2022-42898, CVE-2022-44640
SHA-256 | 84acf94eecacae5883c23a1272096230f0b336c4708449aaa72442ec79969d0e
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