vulnwire
7.5high

CVE-2017-5493

wp-includes/ms-functions.php in the Multisite WordPress API in WordPress before 4.7.1 does not properly choose random numbers for keys, whi…

Published 9 y ago · modified 4 mo ago · JSON

CVSS
7.5
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
2.9%
percentile 87%
Public exploits
0
none known

wp-includes/ms-functions.php in the Multisite WordPress API in WordPress before 4.7.1 does not properly choose random numbers for keys, which makes it easier for remote attackers to bypass intended access restrictions via a crafted (1) site signup or (2) user signup.

Exploit prediction (EPSS)

2.89% probability of exploitation in the next 30 days, higher than 87% 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:H/A:N
NVD2.05.0AV:N/AC:L/Au:N/C:N/I:P/A:N

Classification

Weakness
  • CWE-338 Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
Technology feeds
WordPress (RSS, critical only)

References

  • wpvulndb.com /vulnerabilities/8721 · x_refsource_MISC, x_transferred
  • securityfocus.com /bid/95401 · vdb-entry, x_refsource_BID, x_transferred
  • debian.org /security/2017/dsa-3779 · vendor-advisory, x_refsource_DEBIAN, x_transferred
  • codex.wordpress.org /Version_4.7.1 · x_refsource_CONFIRM, x_transferred
  • openwall.com /lists/oss-security/2017/01/14/6 · mailing-list, x_refsource_MLIST, x_transferred
  • securitytracker.com /id/1037591 · vdb-entry, x_refsource_SECTRACK, x_transferred
  • github.com /WordPress/WordPress/commit/cea9e2dc62abf777e06b12ec4ad9d1aaa49b29f4 · x_refsource_CONFIRM, x_transferred
  • wordpress.org /news/2017/01/wordpress-4-7-1-security-and-maintenance-release/ · 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.