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CVE-2015-2326

MEDIUM severity · CVSS 5.5 · Out-of-bounds read
5.5CVSS MEDIUM

Summary

The pcre_compile2 function in PCRE before 8.37 allows context-dependent attackers to compile incorrect code and cause a denial of service (out-of-bounds read) via regular expression with a group containing both a forward referencing subroutine call and a recursive back reference, as demonstrated by "((?+1)(\1))/".

Impact & exploitability

Attack vectorLocal
Attack complexityLow
Privileges requiredNone
User interactionRequired
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)2%

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected products we track (1)

PHP

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.