Test ID:	1.3.6.1.4.1.25623.1.0.845326
Category:	Ubuntu Local Security Checks
Title:	Ubuntu: Security Advisory (USN-5379-1)
Summary:	The remote host is missing an update for the 'klibc' package(s) announced via the USN-5379-1 advisory.
Description:	Summary: The remote host is missing an update for the 'klibc' package(s) announced via the USN-5379-1 advisory. Vulnerability Insight: It was discovered that klibc did not properly perform some mathematical operations, leading to an integer overflow. An attacker could possibly use this issue to cause a crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-31870) It was discovered that klibc did not properly handled some memory allocations on 64 bit systems. An attacker could possibly use this issue to cause a crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-31871) It was discovered that klibc did not properly handled some file sizes values on 32 bit systems. An attacker could possibly use this issue to cause a crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-31872) It was discovered that klibc did not properly handled some memory allocations. An attacker could possibly use this issue to cause a crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-31873) Affected Software/OS: 'klibc' package(s) on Ubuntu 14.04, Ubuntu 16.04, Ubuntu 18.04, Ubuntu 20.04. Solution: Please install the updated package(s). CVSS Score: 7.5 CVSS Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2021-31870 https://git.kernel.org/pub/scm/libs/klibc/klibc.git/commit/?id=292650f04c2b5348b4efbad61fb014ed09b4f3f2 https://kernel.org/pub/linux/libs/klibc/2.0/ https://lists.zytor.com/archives/klibc/2021-April/004593.html https://lists.debian.org/debian-lts-announce/2021/06/msg00025.html http://www.openwall.com/lists/oss-security/2021/04/30/1 Common Vulnerability Exposure (CVE) ID: CVE-2021-31871 https://git.kernel.org/pub/scm/libs/klibc/klibc.git/commit/?id=2e48a12ab1e30d43498c2d53e878a11a1b5102d5 Common Vulnerability Exposure (CVE) ID: CVE-2021-31872 https://git.kernel.org/pub/scm/libs/klibc/klibc.git/commit/?id=9b1c91577aef7f2e72c3aa11a27749160bd278ff Common Vulnerability Exposure (CVE) ID: CVE-2021-31873 https://git.kernel.org/pub/scm/libs/klibc/klibc.git/commit/?id=a31ae8c508fc8d1bca4f57e9f9f88127572d5202 https://github.com/huolinjue/klibc/commit/a31ae8c508fc8d1bca4f57e9f9f88127572d5202
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