A security issue has been found in Apache HTTP Server from 2.4.0 up to and including 2.4.41, in the mod_rewrite module, where redirects that were intended to be self-referential might be fooled by encoded newlines and redirect instead to an an unexpected URL within the request URL. This is the same defect as CVE-2019-10098. The fix for CVE-2019-10098 was ineffective. Possible mitigations are the use of anchor captures as back-references, or prefixing self-referential redirects with / or scheme, host, and port.
A security issue has been found in Apache HTTP Server from 2.4.0 up to and including 2.4.41, in the mod_rewrite module, where redirects that were intended to be self-referential might be fooled by encoded newlines and redirect instead to an an unexpected URL within the request URL. This is the same defect as CVE-2019-10098. The fix for CVE-2019-10098 was ineffective. Possible mitigations are the use of anchor captures as back-references, or prefixing self-referential redirects with / or scheme, host, and port.
https://seclists.org/oss-sec/2020/q2/3
Vulmon