VulnerabilityModified
CVE-2017-5539
The patch for directory traversal (CVE-2017-5480) in b2evolution version 6.8.4-stable has a bypass vulnerability.
CRITICAL 9.1EPSS 4.17%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.17%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.0
- 9.1 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- EPSS
- 4.17% probability · 90th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-22
- Affected
- b2evolution/b2evolution
- Source
- cve@mitre.org
References
- http://b2evolution.net/downloads/6-8-5Patch, Vendor Advisory
- http://www.securityfocus.com/bid/95700Third Party Advisory, VDB Entry
- https://github.com/b2evolution/b2evolution/commit/e35f7c195d8c1103d2d981a48cda5ab45ecac48aIssue Tracking, Patch, Third Party Advisory
- https://github.com/b2evolution/b2evolution/issues/36Issue Tracking, Patch, Third Party Advisory
- http://b2evolution.net/downloads/6-8-5Patch, Vendor Advisory
- http://www.securityfocus.com/bid/95700Third Party Advisory, VDB Entry
- https://github.com/b2evolution/b2evolution/commit/e35f7c195d8c1103d2d981a48cda5ab45ecac48aIssue Tracking, Patch, Third Party Advisory
- https://github.com/b2evolution/b2evolution/issues/36Issue Tracking, Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.