CVE-2015-1781
UnknownEPSS 5.47%
Last modified
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
Weakness Enumeration
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.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://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.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://www.sourceware.org/ml/libc-alpha/2015-08/msg00609.htmlMailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2015-1781?
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.
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.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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