CVE-2023-34981: Apache Tomcat: AJP response header mix-up
First published: Wed Jun 21 2023(Updated: )
A regression in the fix for bug 66512 in Apache Tomcat 11.0.0-M5, 10.1.8, 9.0.74 and 8.5.88 meant that, if a response did not include any HTTP headers no AJP SEND_HEADERS message would be sent for the response which in turn meant that at least one AJP proxy (mod_proxy_ajp) would use the response headers from the previous request leading to an information leak.
Credit: security@apache.org security@apache.org security@apache.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Apache Tomcat | =8.5.88 | |
| Apache Tomcat | =9.0.74 | |
| Apache Tomcat | =10.1.8 | |
| Apache Tomcat | =11.0.0-milestone5 | |
| maven/org.apache.tomcat:tomcat-coyote | =8.5.88 | 8.5.89 |
| maven/org.apache.tomcat.embed:tomcat-embed-core | =9.0.74 | 9.0.75 |
| maven/org.apache.tomcat.embed:tomcat-embed-core | =10.1.8 | 10.1.9 |
| maven/org.apache.tomcat.embed:tomcat-embed-core | =11.0.0-M5 | 11.0.0-M6 |
| IBM QRadar SIEM | <=7.5.0 - 7.5.0 UP6 | |
| =8.5.88 | ||
| =9.0.74 | ||
| =10.1.8 | ||
| =11.0.0-milestone5 |
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Reference Links
- https://lists.apache.org/thread/j1ksjh9m9gx1q60rtk1sbzmxhvj5h5qz
- https://security.netapp.com/advisory/ntap-20230714-0003/
- https://exchange.xforce.ibmcloud.com/vulnerabilities/258638
- https://www.ibm.com/support/pages/node/7049133 (Advisory)
- https://nvd.nist.gov/vuln/detail/CVE-2023-34981
- https://bz.apache.org/bugzilla/show_bug.cgi?id=66512
- https://bz.apache.org/bugzilla/show_bug.cgi?id=66591
- https://tomcat.apache.org/security-10.html
- https://tomcat.apache.org/security-11.html
- https://tomcat.apache.org/security-8.html
- https://tomcat.apache.org/security-9.html
- https://github.com/advisories/GHSA-mppv-79ch-vw6q (Advisory)
- https://github.com/apache/tomcat/commit/2214c8030522aa9b2a367dfa5d9acff1a03666ae
- https://github.com/apache/tomcat/commit/2f0ca2378415f4cf0748f4bc8fa955f41f803fa5
- https://github.com/apache/tomcat/commit/739c7381aed22b7636351caf885ddc519ab6b442
- https://github.com/apache/tomcat/commit/f0742f47b98aca943097f7f88e0d1163f57527e3
- https://security.netapp.com/advisory/ntap-20230714-0003
Frequently Asked Questions
What is the severity of CVE-2023-34981?
The severity of CVE-2023-34981 is high.
Which versions of Apache Tomcat are affected by CVE-2023-34981?
Apache Tomcat versions 8.5.88, 9.0.74, 10.1.8, and 11.0.0-M5 are affected by CVE-2023-34981.
How does CVE-2023-34981 affect Apache Tomcat?
CVE-2023-34981 in Apache Tomcat can cause a regression in the fix for bug 66512, resulting in the failure to send AJP SEND_HEADERS messages for responses without any HTTP headers.
How can I fix CVE-2023-34981 in Apache Tomcat?
To fix CVE-2023-34981, upgrade to Apache Tomcat versions 8.5.89, 9.0.75, 10.1.9, or 11.0.0-M6.
Where can I find more information about CVE-2023-34981?
You can find more information about CVE-2023-34981 at the following references: [Link 1](https://nvd.nist.gov/vuln/detail/CVE-2023-34981), [Link 2](https://lists.apache.org/thread/j1ksjh9m9gx1q60rtk1sbzmxhvj5h5qz), [Link 3](https://bz.apache.org/bugzilla/show_bug.cgi?id=66512).
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