Amazon Linux 1 Security Advisory: ALAS-2017-792
Advisory Release Date: 2017-02-06 18:00 Pacific
Advisory Updated Date: 2017-02-06 18:00 Pacific
A stack overflow vulnerability was found in _nss_dns_getnetbyname_r. On systems with nsswitch configured to include "networks: dns" with a privileged or network-facing service that would attempt to resolve user-provided network names, an attacker could provide an excessively long network name, resulting in stack corruption and code execution.
Affected Packages:
glibc
Issue Correction:
Run yum update glibc to update your system.
i686:
glibc-devel-2.17-157.169.amzn1.i686
glibc-headers-2.17-157.169.amzn1.i686
glibc-2.17-157.169.amzn1.i686
glibc-utils-2.17-157.169.amzn1.i686
glibc-common-2.17-157.169.amzn1.i686
glibc-debuginfo-common-2.17-157.169.amzn1.i686
nscd-2.17-157.169.amzn1.i686
glibc-static-2.17-157.169.amzn1.i686
glibc-debuginfo-2.17-157.169.amzn1.i686
src:
glibc-2.17-157.169.amzn1.src
x86_64:
glibc-debuginfo-2.17-157.169.amzn1.x86_64
glibc-utils-2.17-157.169.amzn1.x86_64
glibc-2.17-157.169.amzn1.x86_64
nscd-2.17-157.169.amzn1.x86_64
glibc-devel-2.17-157.169.amzn1.x86_64
glibc-debuginfo-common-2.17-157.169.amzn1.x86_64
glibc-static-2.17-157.169.amzn1.x86_64
glibc-headers-2.17-157.169.amzn1.x86_64
glibc-common-2.17-157.169.amzn1.x86_64