CVE-2021-40438 · netVigilance record NV21-0295

Apache HTTP Server-Side Request Forgery (SSRF)

past due ransomware

What to do

Apply updates per vendor instructions.

CISA deadline 2021-12-15 · passed 4 years 8 months ago · applies to US federal civilian agencies; used elsewhere as a reference SLA

What happened

A crafted request uri-path can cause mod_proxy to forward the request to an origin server choosen by the remote user. This issue affects Apache HTTP Server 2.4.48 and earlier.

Who is affected

Apache Apache. Affected version ranges are listed in the vendor advisory and the NVD entry linked under Sources.

Weakness class: CWE-918.

Timeline

2021-12-01
Added to CISA KEVExploitation in the wild confirmed by CISA
2021-12-15
CISA remediation deadlinepassed 4 years 8 months ago

Sources

NVD entry for CVE-2021-40438 nvd.nist.gov/vuln/detail/CVE-2021-40438
CISA Known Exploited Vulnerabilities catalog www.cisa.gov/known-exploited-vulnerabilities-catalog
nvd.nist.gov nvd.nist.gov/vuln/detail/CVE-2021-40438