vulnwire
7.5high

CVE-2017-12425

An issue was discovered in Varnish HTTP Cache 4.0.1 through 4.0.4, 4.1.0 through 4.1.7, 5.0.0, and 5.1.0 through 5.1.2.

Published 9 y ago · modified 4 mo ago · JSON

CVSS
7.5
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
2.4%
percentile 84%
Public exploits
0
none known

An issue was discovered in Varnish HTTP Cache 4.0.1 through 4.0.4, 4.1.0 through 4.1.7, 5.0.0, and 5.1.0 through 5.1.2. A wrong if statement in the varnishd source code means that particular invalid requests from the client can trigger an assert, related to an Integer Overflow. This causes the varnishd worker process to abort and restart, losing the cached contents in the process. An attacker can therefore crash the varnishd worker process on demand and effectively keep it from serving content - a Denial-of-Service attack. The specific source-code filename containing the incorrect statement varies across releases.

Exploit prediction (EPSS)

2.42% probability of exploitation in the next 30 days, higher than 84% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.07.5CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD2.05.0AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-190 Integer Overflow or Wraparound

References

  • varnish-cache.org /security/VSV00001.html#vsv00001 · x_refsource_CONFIRM, x_transferred
  • lists.debian.org /debian-security-announce/2017/msg00186.html · x_refsource_CONFIRM, x_transferred
  • debian.org /security/2017/dsa-3924 · vendor-advisory, x_refsource_DEBIAN, x_transferred
  • bugzilla.suse.com /show_bug.cgi?id=1051917 · x_refsource_CONFIRM, x_transferred
  • bugzilla.redhat.com /show_bug.cgi?id=1477222 · x_refsource_CONFIRM, x_transferred
  • github.com /varnishcache/varnish-cache/issues/2379 · x_refsource_CONFIRM, x_transferred

Sources

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.