What’s Vulnerable › Vulnerabilities

CVE-2011-1783

• Severity: medium (CVSS 4.3 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 6.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2011-06-06 · updated 2026-06-16

Description

The mod_dav_svn module for the Apache HTTP Server, as distributed in Apache Subversion 1.5.x and 1.6.x before 1.6.17, when the SVNPathAuthz short_circuit option is enabled, allows remote attackers to cause a denial of service (infinite loop and memory consumption) in opportunistic circumstances by requesting data.

Affected products

• Apache Software Foundation Apache Subversion: from 1.5.0 through 1.5.8; from 1.6.0 before 1.6.17 — fixed in 1.6.17
• macOS: before 10.7.3 — fixed in 10.7.3
• Canonical Ubuntu Linux: 10.04, 10.10, 11.04
• Debian Linux: 5.0, 6.0
• Fedoraproject Fedora: 14, 15

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache Subversion 1.6.17; macOS 10.7.3. Check the vendor advisory for mitigations.

References

• http://lists.apple.com/archives/security-announce/2012/Feb/msg00000.html
• http://lists.fedoraproject.org/pipermail/package-announce/2011-July/062211.html
• http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061913.html
• http://secunia.com/advisories/44633
• http://secunia.com/advisories/44681
• http://secunia.com/advisories/44849
• http://secunia.com/advisories/44888
• http://secunia.com/advisories/45162
• http://subversion.apache.org/security/CVE-2011-1783-advisory.txt
• http://support.apple.com/kb/HT5130
• http://svn.apache.org/repos/asf/subversion/tags/1.6.17/CHANGES
• http://www.debian.org/security/2011/dsa-2251

Get alerted when CVE-2011-1783 or the next vulnerability affects your stack