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CVE-2015-2331 is an integer-overflow vulnerability in libzip's _zip_cdir_new function. In libzip 0.11.2 and earlier, a ZIP archive containing a large number of entries can cause arithmetic used to size central-directory-related heap allocations to wrap. The resulting undersized allocation is subsequently overrun, producing a heap-based buffer overflow. PHP's ZIP extension is affected in PHP versions before 5.4.39, 5.5.23, and 5.6.7, as are other products incorporating vulnerable libzip code.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
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.
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability addressed in HP Matrix Operating Environment 7.5.0.
Remote denial-of-service and arbitrary-code-execution vulnerability affecting HP System Management Homepage (SMH).
A PHP numeric-error vulnerability affecting the HP-UX Apache Web Server Suite. The bulletin assigns a CVSS v2 base score of 7.5.
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.