CVE-2015-1781

critical

Description

Buffer overflow in the gethostbyname_r and other unspecified NSS functions in the GNU C Library (aka glibc or libc6) before 2.22 allows context-dependent attackers to cause a denial of service (crash) or execute arbitrary code via a crafted DNS response, which triggers a call with a misaligned buffer.

References

Advisories
More

https://www.sourceware.org/ml/libc-alpha/2015-08/msg00609.html

https://sourceware.org/bugzilla/show_bug.cgi?id=18287

https://security.gentoo.org/glsa/201602-02

https://rhn.redhat.com/errata/RHSA-2015-0863.html

http://www.ubuntu.com/usn/USN-2985-2

http://www.ubuntu.com/usn/USN-2985-1

http://www.securitytracker.com/id/1032178

http://www.securityfocus.com/bid/74255

http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html

http://www.debian.org/security/2016/dsa-3480

http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00036.html

http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00019.html

http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177404.html

https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=2959eda9272a03386

Details

Source: Mitre, NVD

Published: 2015-09-28

Updated: 2025-04-12

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.07725