Red Hat Security Advisory: glibc security update

Fixed packages 256

Vulnerabilities 2

• Medium 5.9
  CVE-2023-4806

  Glibc: potential use-after-free in getaddrinfo()

  A flaw has been identified in glibc. In an extremely rare situation, the getaddrinfo function may access memory that has been freed, resulting in an application crash. This issue is only exploitable when a NSS module implements only the _nss_*_gethostbyname2_…

  Red Hat Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 7 Linux Debian Ubuntu Azure Linux
  Sep 18, 2023
• Medium 5.9
  CVE-2023-4813 Public exploit

  Glibc: potential use-after-free in gaih_inet()

  A flaw has been identified in glibc. In an uncommon situation, the gaih_inet function may use memory that has been freed, resulting in an application crash. This issue is only exploitable when the getaddrinfo function is called and the hosts database in /etc/…

  Red Hat Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 7 Linux Debian Ubuntu Azure Linux
  Sep 12, 2023

References

• article
  https://access.redhat.com/security/updates/classification/#moderate
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2237782
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2237798
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2023/rhsa-2023_7409.json
• report
  https://access.redhat.com/security/cve/CVE-2023-4806
• advisory
  https://www.cve.org/CVERecord?id=CVE-2023-4806
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2023-4806
• report
  https://access.redhat.com/security/cve/CVE-2023-4813
• advisory
  https://www.cve.org/CVERecord?id=CVE-2023-4813
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2023-4813