VulnerabilityAnalyzed
CVE-2020-11993
Configuring the LogLevel of mod_http2 above "info" will mitigate this vulnerability for unpatched servers.
HIGH 7.5EPSS 56.4%
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 56.4%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
Description
Apache HTTP Server versions 2.4.20 to 2.4.43 When trace/debug was enabled for the HTTP/2 module and on certain traffic edge patterns, logging statements were made on the wrong connection, causing concurrent use of memory pools. Configuring the LogLevel of mod_http2 above "info" will mitigate this vulnerability for unpatched servers.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 56.45% probability · 99th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-444
- Affected
- apache/http server · netapp/clustered data ontap · canonical/ubuntu linux · opensuse/leap · debian/debian linux · fedoraproject/fedora · oracle/communications element manager · oracle/communications session report manager · oracle/communications session route manager · oracle/enterprise manager ops center · oracle/hyperion infrastructure technology · oracle/instantis enterprisetrack · oracle/zfs storage appliance kit
- Source
- security@apache.org
References
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00068.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00071.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00081.htmlMailing List, Third Party Advisory
- http://packetstormsecurity.com/files/160393/Apache-2-HTTP2-Module-Concurrent-Pool-Usage.htmlExploit, Third Party Advisory, VDB Entry
- https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2020-11993Vendor Advisory
- https://lists.apache.org/thread.html/r06f0d87ebb6d59ed8379633f36f72f5b1f79cadfda72ede0830b42cf%40%3Ccvs.httpd.apache.org%3EPatch
- https://lists.apache.org/thread.html/r09bb998baee74a2c316446bd1a41ae7f8d7049d09d9ff991471e8775%40%3Ccvs.httpd.apache.org%3EPatch
- https://lists.apache.org/thread.html/r2c6083f6a2027914a0f5b54e2a1f4fa98c03f8693b58460911818255%40%3Ccvs.httpd.apache.org%3EPatch
- https://lists.apache.org/thread.html/r3c5c3104813c1c5508b55564b66546933079250a46ce50eee90b2e36%40%3Ccvs.httpd.apache.org%3EPatch
- https://lists.apache.org/thread.html/r5debe8f82728a00a4a68bc904dd6c35423bdfc8d601cfb4579f38bf1%40%3Cdev.httpd.apache.org%3EPatch
- https://lists.apache.org/thread.html/r623de9b2b2433a87f3f3a15900419fc9c00c77b26936dfea4060f672%40%3Cdev.httpd.apache.org%3EPatch
- https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d%40%3Ccvs.httpd.apache.org%3EPatch
- https://lists.apache.org/thread.html/r9e9f1a7609760f0f80562eaaec2aa3c32d525c3e0fca98b475240c71%40%3Cdev.httpd.apache.org%3EPatch
- https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3EPatch
- https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apache.org%3EPatch
- https://lists.apache.org/thread.html/rdf3e5d0a5f5c3d90d6013bccc6c4d5af59cf1f8c8dea5d9a283d13ce%40%3Ccvs.httpd.apache.org%3EPatch
- https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3EPatch
- https://lists.apache.org/thread.html/rf71eb428714374a6f9ad68952e23611ec7807b029fd6a1b4f5f732d9%40%3Ccvs.httpd.apache.org%3EPatch
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4NKWG2EXAQQB6LMLATKZ7KLSRGCSHVAN/Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ITVFDBVM6E3JF3O7RYLRPRCH3RDRHJJY/Third Party Advisory
- https://security.gentoo.org/glsa/202008-04Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200814-0005/Third Party Advisory
- https://usn.ubuntu.com/4458-1/Third Party Advisory
- https://www.debian.org/security/2020/dsa-4757Third Party Advisory
- https://www.oracle.com/security-alerts/cpujan2021.htmlThird Party Advisory
- https://www.oracle.com/security-alerts/cpuoct2020.htmlVendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00068.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00071.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00081.htmlMailing List, Third Party Advisory
- http://packetstormsecurity.com/files/160393/Apache-2-HTTP2-Module-Concurrent-Pool-Usage.htmlExploit, Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.