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CVE-2015-1781

19
FAUCET Score

CVE-2015-1781 describes a buffer overflow vulnerability in the GNU C Library (glibc) affecting versions prior to 2.22, specifically within the gethostbyname_r and other NSS functions. This flaw can be triggered by a crafted DNS response, leading to a denial of service or arbitrary code execution on systems running Canonical, Debian, GNU, or SUSE distributions. The vulnerability has a CVSS score of 6.8, indicating a medium severity with a network attack vector and medium attack complexity, potentially resulting in partial confidentiality, integrity, and availability impacts. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
11CPE matchmatch criteria
cpe:2.3:a:suse:linux_enterprise_debuginfo:11:sp3:*:*:*:*:*:*
11CPE matchmatch criteria
cpe:2.3:a:suse:linux_enterprise_debuginfo:11:sp4:*:*:*:*:*:*
11CPE matchmatch criteria
cpe:2.3:o:suse:linux_enterprise_desktop:11:sp3:*:*:*:*:*:*
11CPE matchmatch criteria
cpe:2.3:o:suse:linux_enterprise_desktop:11:sp4:*:*:*:*:*:*
11CPE matchmatch criteria
cpe:2.3:o:suse:linux_enterprise_server:11:sp3:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

AV:N/AC:M/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
5.01%
Probability of exploitation in next 30 days
EPSS Percentile
91.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0501 is in the 89th percentile among its peer group of 19,956 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: glibc-0:2.12-1.149.el6_6.7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: glibc-0:2.17-105.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.1 Extended Update SupportFixed in: glibc-0:2.17-79.ael7b_1
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: glibc

Vendor Advisories (1)

redhatCVE-2015-1781Moderate

glibc: buffer overflow in gethostbyname_r() and related functions with misaligned buffer

Apr 21, 2015

References

lists.fedoraproject.org / pipermail/package-announce/2016-February/177404.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2015-08/msg00019.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2016-02/msg00036.html
Mailing ListThird Party Advisory
rhn.redhat.com / errata/RHSA-2015-0863.html
Third Party Advisory
security.gentoo.org / glsa/201602-02
Third Party Advisory
sourceware.org / bugzilla/show_bug.cgi
Issue TrackingThird Party Advisory
sourceware.org / git
sourceware.org / ml/libc-alpha/2015-08/msg00609.html
Mailing ListThird Party Advisory
debian.org / security/2016/dsa-3480
Third Party Advisory
oracle.com / technetwork/topics/security/linuxbulletinoct2015-2719645.html
Third Party Advisory
securityfocus.com / bid/74255
Third Party AdvisoryVDB Entry
securitytracker.com / id/1032178
Third Party AdvisoryVDB Entry
ubuntu.com / usn/USN-2985-1
Third Party Advisory
ubuntu.com / usn/USN-2985-2
Third Party Advisory