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CVE-2011-3639 is an incomplete-fix vulnerability in Apache HTTP Server mod_proxy affecting Apache HTTP Server 2.0.x through 2.0.64 and 2.2.x before 2.2.18 when the Revision 1179239 patch for CVE-2011-3368 is present. The flaw arises from improper interaction between reverse-proxy configuration using RewriteRule or ProxyPassMatch pattern matching and HTTP/0.9 requests containing a malformed URI that begins with an at-sign character. An unauthenticated remote client can cause the reverse proxy to forward requests to intranet hosts.
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What an attacker gets, and what they’ve been doing with it.
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No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
1 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.