CVE-2018-1302

MEDIUM severity · CVSS 5.9 · CWE-476

5.9CVSS MEDIUM

Summary

When an HTTP/2 stream was destroyed after being handled, the Apache HTTP Server prior to version 2.4.30 could have written a NULL pointer potentially to an already freed memory. The memory pools maintained by the server make this vulnerability hard to trigger in usual configurations, the reporter and the team could not reproduce it outside debug builds, so it is classified as low risk.

Impact & exploitability

Attack vectorNetwork

Attack complexityHigh

Privileges requiredNone

User interactionNone

Confidentiality impactNone

Integrity impactNone

Availability impactHigh

Exploit probability (EPSS)12%

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products we track (1)

Apache HTTP Server

Recommendation

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

Additional information

NVD record
https://httpd.apache.org/security/vulnerabilities_24.htmlAdvisory
http://www.openwall.com/lists/oss-security/2018/03/24/5Advisory
http://www.securityfocus.com/bid/103528Advisory
http://www.securitytracker.com/id/1040567Advisory
https://access.redhat.com/errata/RHSA-2019:0366Advisory
https://access.redhat.com/errata/RHSA-2019:0367Advisory
https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830%40%3Ccvs.httpd.apache.org%3E