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CVE-2011-4315

6.8 · MEDIUM

Heap-based buffer overflow in compression-pointer processing in core/ngx_resolver.c in nginx before 1.0.10 allows remote resolvers to cause a denial of service (daemon crash) or possibly have unspe…

Published Dec 8, 2011f5CWE-787EPSS 5.96%

Overview

CVE-2011-4315 is a medium-severity vulnerability affecting f5 nginx. It was published on December 8, 2011 and has a CVSS 2.0 base score of 6.8 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 6.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Heap-based buffer overflow in compression-pointer processing in core/ngx_resolver.c in nginx before 1.0.10 allows remote resolvers to cause a denial of service (daemon crash) or possibly have unspecified other impact via a long response.

Remediation

Check the references section for vendor advisories and patches from f5. Update nginx to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
f5nginx>= 0.6.18, < 1.0.10Affected

References

Reflists.fedoraproject.org/pipermail/package-announce/2011-December/070569.htmlReflists.opensuse.org/opensuse-security-announce/2011-12/msg00005.htmlRefopenwall.com/lists/oss-security/2011/11/17/10Refopenwall.com/lists/oss-security/2011/11/17/8Refsecunia.com/advisories/47097Refsecunia.com/advisories/48577Refsecurity.gentoo.org/glsa/glsa-201203-22.xmlReftrac.nginx.org/nginx/changeset/4268/nginxRefwww.nginx.org/en/CHANGES-1.0Refwww.securityfocus.com/bid/50710

How CyberStrike helps

Frequently asked questions

What is CVE-2011-4315?

CVE-2011-4315 is a medium-severity vulnerability affecting f5 nginx. It was published on December 8, 2011 and has a CVSS 2.0 base score of 6.8 (MEDIUM).

How severe is CVE-2011-4315?

This vulnerability has a CVSS 2.0 base score of 6.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2011-4315?

Check the references section for vendor advisories and patches from f5. Update nginx to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2011-4315?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-4315 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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