CVE-2015-4024
Algorithmic complexity vulnerability in the multipart_buffer_headers function in main/rfc1867.c in PHP before 5.4.41, 5.5.x before 5.5.25, and 5.6.x before 5.6.9 allows remote attackers to cause a denial of service (CPU consumption) via crafted form…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 41.8%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
Description
Algorithmic complexity vulnerability in the multipart_buffer_headers function in main/rfc1867.c in PHP before 5.4.41, 5.5.x before 5.5.25, and 5.6.x before 5.6.9 allows remote attackers to cause a denial of service (CPU consumption) via crafted form data that triggers an improper order-of-growth outcome.
- CVSS 2.0
- 5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
- EPSS
- 41.79% probability · 99th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-399
- Affected
- redhat/enterprise linux · apple/mac os x · php/php · hp/system management homepage · oracle/linux · oracle/solaris · redhat/enterprise linux desktop · redhat/enterprise linux hpc node · redhat/enterprise linux hpc node eus · redhat/enterprise linux server · redhat/enterprise linux server eus · redhat/enterprise linux workstation
- Source
- cve@mitre.org
EPSS moved from 41.8% on 22 October 2026 to 41.8% on 4 November 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.htmlMailing List, Third Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2015-May/158616.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-May/158915.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-May/159031.html
- http://lists.opensuse.org/opensuse-updates/2015-06/msg00002.html
- http://php.net/ChangeLog-5.phpPatch
- http://rhn.redhat.com/errata/RHSA-2015-1135.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2015-1186.html
- http://rhn.redhat.com/errata/RHSA-2015-1187.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2015-1218.html
- http://rhn.redhat.com/errata/RHSA-2015-1219.html
- http://www.debian.org/security/2015/dsa-3280
- http://www.oracle.com/technetwork/topics/security/bulletinjul2015-2511963.htmlThird Party Advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.htmlThird Party Advisory
- http://www.securityfocus.com/bid/74903
- http://www.securitytracker.com/id/1032432
- https://bugs.php.net/bug.php?id=69364Exploit, Patch
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05045763Third Party Advisory
- https://support.apple.com/kb/HT205031
- http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.htmlMailing List, Third Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2015-May/158616.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-May/158915.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-May/159031.html
- http://lists.opensuse.org/opensuse-updates/2015-06/msg00002.html
- http://php.net/ChangeLog-5.phpPatch
- http://rhn.redhat.com/errata/RHSA-2015-1135.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2015-1186.html
- http://rhn.redhat.com/errata/RHSA-2015-1187.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2015-1218.html
- http://rhn.redhat.com/errata/RHSA-2015-1219.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.