CVE-2019-10082 — In Apache HTTP Server 2

In Apache HTTP Server 2.4.18-2.4.39, using fuzzed network input, the http/2 session handling could be made to read memory after being freed, during connection shutdown.

01What is this vulnerability?

In Apache HTTP Server 2.4.18-2.4.39, using fuzzed network input, the http/2 session handling could be made to read memory after being freed, during connection shutdown.

02Affected products

Vendor	Product	Versions
n	a / Apache HTTP Server	2.4.18 to 2.4.39

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

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2019-09-26T14:40:39.000Z
• Last modified: 2024-08-04T22:10:09.458Z

09References

• lists.apache.org — https://lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0…
• lists.apache.org — https://lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cac…
• www.oracle.com — https://www.oracle.com/security-alerts/cpuapr2020.html
• www.oracle.com — https://www.oracle.com/security-alerts/cpujul2020.html
• www.oracle.com — https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
• httpd.apache.org — https://httpd.apache.org/security/vulnerabilities_24.html
• lists.apache.org — https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90b…
• lists.apache.org — https://lists.apache.org/thread.html/r06f0d87ebb6d59ed8379633f36f72f5b1f79cadfda…
• lists.apache.org — https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa…
• lists.apache.org — https://lists.apache.org/thread.html/r03ee478b3dda3e381fd6189366fa7af97c980d2f60…
• lists.apache.org — https://lists.apache.org/thread.html/rd2fb621142e7fa187cfe12d7137bf66e7234abcbbc…
• lists.apache.org — https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f8…
• lists.apache.org — https://lists.apache.org/thread.html/r3c5c3104813c1c5508b55564b66546933079250a46…
• lists.apache.org — https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37…
• www.oracle.com — https://www.oracle.com/security-alerts/cpuoct2021.html
• www.oracle.com — https://www.oracle.com/security-alerts/cpujul2022.html