CVE-2022-28614: read beyond bounds via ap_rwrite()

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 5.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-06-09 · updated 2026-06-17
Weakness: CWE-190

Description

The ap_rwrite() function in Apache HTTP Server 2.4.53 and earlier may read unintended memory if an attacker can cause the server to reflect very large input using ap_rwrite() or ap_rputs(), such as with mod_luas r:puts() function. Modules compiled and distributed separately from Apache HTTP Server that use the 'ap_rputs' function and may pass it a very large (INT_MAX or larger) string must be compiled against current headers to resolve the issue.

Affected products

Apache HTTP Server: through 2.4.53
Fedoraproject Fedora: 35, 36
Clustered Data ONTAP: all versions

References

http://www.openwall.com/lists/oss-security/2022/06/08/4
https://httpd.apache.org/security/vulnerabilities_24.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7QUGG2QZWHTITMABFLVXA4DNYUOTPWYQ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YPY2BLEVJWFH34AX77ZJPLD2OOBYR6ND/
https://security.gentoo.org/glsa/202208-20
https://security.netapp.com/advisory/ntap-20220624-0005/
http://www.openwall.com/lists/oss-security/2022/06/08/4
https://httpd.apache.org/security/vulnerabilities_24.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7QUGG2QZWHTITMABFLVXA4DNYUOTPWYQ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YPY2BLEVJWFH34AX77ZJPLD2OOBYR6ND/
https://security.gentoo.org/glsa/202208-20
https://security.netapp.com/advisory/ntap-20220624-0005/

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