vulnerability
Ubuntu: USN-6409-1 (CVE-2023-4527): GNU C Library vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 8 | (AV:N/AC:M/Au:N/C:P/I:N/A:C) | Sep 18, 2023 | Oct 4, 2023 | Mar 27, 2026 |
Severity
8
CVSS
(AV:N/AC:M/Au:N/C:P/I:N/A:C)
Published
Sep 18, 2023
Added
Oct 4, 2023
Modified
Mar 27, 2026
Description
A flaw was found in glibc. When the getaddrinfo function is called with the AF_UNSPEC address family and the system is configured with no-aaaa mode via /etc/resolv.conf, a DNS response via TCP larger than 2048 bytes can potentially disclose stack contents through the function returned address data, and may cause a crash.
Solution
ubuntu-upgrade-libc6
Rapid7 Labs
2026 Global Threat Landscape Report
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