vulnwire
9.1crit

CVE-2017-5539

The patch for directory traversal (CVE-2017-5480) in b2evolution version 6.8.4-stable has a bypass vulnerability.

Published 9 y ago · modified 4 mo ago · JSON

CVSS
9.1
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
4.3%
percentile 91%
Public exploits
0
none known

The patch for directory traversal (CVE-2017-5480) in b2evolution version 6.8.4-stable has a bypass vulnerability. An attacker can use ..\/ to bypass the filter rule. Then, this attacker can exploit this vulnerability to delete or read any files on the server. It can also be used to determine whether a file exists.

Exploit prediction (EPSS)

4.25% probability of exploitation in the next 30 days, higher than 91% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.09.1CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
NVD2.09.0AV:N/AC:L/Au:N/C:C/I:P/A:P

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

  • github.com /b2evolution/b2evolution/commit/e35f7c195d8c1103d2d981a48cda5ab45ecac48a · x_refsource_CONFIRM, x_transferred
  • b2evolution.net /downloads/6-8-5 · x_refsource_CONFIRM, x_transferred
  • securityfocus.com /bid/95700 · vdb-entry, x_refsource_BID, x_transferred
  • github.com /b2evolution/b2evolution/issues/36 · 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.