USN-5310-1: GNU C Library vulnerabilities
Jan Engelhardt, Tavis Ormandy, and others discovered that the GNU C Library iconv feature incorrectly handled certain input sequences. An attacker could possibly use this issue to cause the GNU C Library to hang or crash, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2016-10228, CVE-2019-25013, CVE-2020-27618, CVE-2020-29562, CVE-2021-3326) Jason Royes and Samuel Dytrych discovered that the GNU C Library incorrectly handled signed comparisons on ARMv7 targets. A remote attacker could use this issue to cause the GNU C Library to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-6096) It was discovered that the GNU C Library nscd daemon incorrectly handled certain netgroup lookups. An attacker could possibly use this issue to cause the GNU C Library to crash, resulting in a denial of service. This issue only affected Ubuntu 20.04 LTS. (CVE-2021-27645) It was discovered that the GNU C Library wordexp function incorrectly handled certain patterns. An attacker could use this issue to cause the GNU C Library to crash, resulting in a denial of service, or possibly obtain sensitive information. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2021-35942) It was discovered that the GNU C Library realpath function incorrectly handled return values. An attacker could possibly use this issue to obtain sensitive information. This issue only affected Ubuntu 21.10. (CVE-2021-3998) It was discovered that the GNU C library getcwd function incorrectly handled buffers. An attacker could use this issue to cause the GNU C Library to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-3999) It was discovered that the GNU C Library sunrpc module incorrectly handled buffer lengths. An attacker could possibly use this issue to cause the GNU C Library to crash, resulting in a denial of service. (CVE-2022-23218, CVE-2022-23219)
Affected Software
Event History
Child vulnerabilities
Contains the following vulnerabilities.
Frequently Asked Questions
What is the severity of USN-5310-1?
USN-5310-1 is classified as a denial of service vulnerability that may cause the GNU C Library to hang or crash.
How do I fix USN-5310-1?
To fix USN-5310-1, upgrade the GNU C Library to version 2.34-0ubuntu3.2 for Ubuntu 21.10, 2.31-0ubuntu9.7 for Ubuntu 20.04, or 2.27-3ubuntu1.5 for Ubuntu 18.04.
What products are affected by USN-5310-1?
The vulnerable products affected by USN-5310-1 are Ubuntu versions 21.10, 20.04, and 18.04 with specific versions of the libc6 package.
Who discovered the vulnerability USN-5310-1?
USN-5310-1 was discovered by security researchers including Jan Engelhardt and Tavis Ormandy.
What are the potential impacts of USN-5310-1?
The potential impact of USN-5310-1 includes the risk of denial of service, which can affect system availability.