CVE-2015-1781

Name: CVE-2015-1781
Creator: NVD / NIST
Published: 2015-09-28T20:59:00.093+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 5.47%

Last modified Jun 17, 2026

CVE-2015-1781 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 5.47% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

5.47%

91.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions	Update
Suse	Linux Enterprise Debuginfo	11	Sp3
Suse	Linux Enterprise Desktop	11	Sp3
Suse	Linux Enterprise Server	11	Sp3
Gnu	Glibc	<= 2.21	—
Debian	Debian Linux	7.0	—
Canonical	Ubuntu Linux	12.04	—
Canonical	Ubuntu Linux	14.04	—
Canonical	Ubuntu Linux	15.04	—

References

http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177404.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00019.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00036.htmlMailing List, Third Party Advisory
http://www.debian.org/security/2016/dsa-3480Third Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.htmlThird Party Advisory
http://www.securityfocus.com/bid/74255Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1032178Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-2985-1Third Party Advisory
http://www.ubuntu.com/usn/USN-2985-2Third Party Advisory
https://rhn.redhat.com/errata/RHSA-2015-0863.htmlThird Party Advisory
https://security.gentoo.org/glsa/201602-02Third Party Advisory
https://sourceware.org/bugzilla/show_bug.cgi?id=18287Issue Tracking, Third Party Advisory
https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=2959eda9272a03386
https://www.sourceware.org/ml/libc-alpha/2015-08/msg00609.htmlMailing List, Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177404.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00019.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00036.htmlMailing List, Third Party Advisory
http://www.debian.org/security/2016/dsa-3480Third Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.htmlThird Party Advisory
http://www.securityfocus.com/bid/74255Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1032178Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-2985-1Third Party Advisory
http://www.ubuntu.com/usn/USN-2985-2Third Party Advisory
https://rhn.redhat.com/errata/RHSA-2015-0863.htmlThird Party Advisory
https://security.gentoo.org/glsa/201602-02Third Party Advisory
https://sourceware.org/bugzilla/show_bug.cgi?id=18287Issue Tracking, Third Party Advisory
https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=2959eda9272a03386
https://www.sourceware.org/ml/libc-alpha/2015-08/msg00609.htmlMailing List, Third Party Advisory

Timeline

Published: Sep 28, 2015
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2015-1781?

How severe is CVE-2015-1781?

Severity scoring for CVE-2015-1781 is pending analysis. The EPSS model estimates a 5.47% probability of exploitation in the next 30 days.

How do I fix CVE-2015-1781?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2015-1781?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST