CVE-2021-32785
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2021-32785
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-32785.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2021-32785
- Aliases
-
- GHSA-55r8-6w97-xxr4
- Related
- Published
- 2021-07-22T22:15:08Z
- Modified
- 2024-10-12T07:00:14.053277Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
modauthopenidc is an authentication/authorization module for the Apache 2.x HTTP server that functions as an OpenID Connect Relying Party, authenticating users against an OpenID Connect Provider. When modauthopenidc versions prior to 2.4.9 are configured to use an unencrypted Redis cache (
OIDCCacheEncrypt off,OIDCSessionType server-cache,OIDCCacheType redis),mod_auth_openidcwrongly performed argument interpolation before passing Redis requests tohiredis, which would perform it again and lead to an uncontrolled format string bug. Initial assessment shows that this bug does not appear to allow gaining arbitrary code execution, but can reliably provoke a denial of service by repeatedly crashing the Apache workers. This bug has been corrected in version 2.4.9 by performing argument interpolation only once, using thehiredisAPI. As a workaround, this vulnerability can be mitigated by settingOIDCCacheEncrypttoon, as cache keys are cryptographically hashed before use when this option is enabled. - References
-
- https://github.com/zmartzone/mod_auth_openidc/security/advisories/GHSA-55r8-6w97-xxr4
- https://security.netapp.com/advisory/ntap-20210902-0001/
- https://lists.debian.org/debian-lts-announce/2023/04/msg00034.html
- https://github.com/zmartzone/mod_auth_openidc/commit/dc672688dc1f2db7df8ad4abebc367116017a449
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://github.com/zmartzone/mod_auth_openidc/releases/tag/v2.4.9
- https://security-tracker.debian.org/tracker/CVE-2021-32785
Affected packages
Debian:11 / libapache2-mod-auth-openidc
Package
- Name
- libapache2-mod-auth-openidc
- Purl
- pkg:deb/debian/libapache2-mod-auth-openidc?arch=source
Debian:12 / libapache2-mod-auth-openidc
Package
- Name
- libapache2-mod-auth-openidc
- Purl
- pkg:deb/debian/libapache2-mod-auth-openidc?arch=source
Debian:13 / libapache2-mod-auth-openidc
Package
- Name
- libapache2-mod-auth-openidc
- Purl
- pkg:deb/debian/libapache2-mod-auth-openidc?arch=source
Git / github.com/apache/httpd
Affected ranges
- Type
- GIT
- Repo
- https://github.com/apache/httpd
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
- Type
- GIT
- Repo
- https://github.com/openidc/mod_auth_openidc
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed