CVE-2022-33879 — The initial fixes in CVE-2022-30126 and CVE-2022-30973 for regexes in the Standa

The initial fixes in CVE-2022-30126 and CVE-2022-30973 for regexes in the StandardsExtractingContentHandler were insufficient, and we found a separate, new regex DoS in a different regex in the StandardsExtractingContentHandler. These are now fixed in 1.28.4 and 2.4.1.

01What is this vulnerability?

The initial fixes in CVE-2022-30126 and CVE-2022-30973 for regexes in the StandardsExtractingContentHandler were insufficient, and we found a separate, new regex DoS in a different regex in the StandardsExtractingContentHandler. These are now fixed in 1.28.4 and 2.4.1.

02Affected products

Vendor	Product	Versions
Apache Software Foundation	Apache Tika	Apache Tika

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

08Timeline

• Published: 2022-06-27T21:40:10.000Z
• Last modified: 2024-08-03T08:09:22.671Z

09References

• lists.apache.org — https://lists.apache.org/thread/wfno8mf5nlcvbs78z93q9thgrm30wwfh
• www.openwall.com — http://www.openwall.com/lists/oss-security/2022/06/27/5
• security.netapp.com — https://security.netapp.com/advisory/ntap-20220812-0004/