CVE-2019-18802 The advisory has been revoked - it doesn't affect any version of package python3-nghttp2 (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-SLES151-PYTHON3NGHTTP2-2715007
- published14 Apr 2022
- disclosed19 Mar 2020
Introduced: 19 Mar 2020
CVE-2019-18802 (opens in a new tab)Amendment
The SLES security team deemed this advisory irrelevant for SLES:15.1.
NVD Description
Note: Versions mentioned in the description apply only to the upstream python3-nghttp2 package and not the python3-nghttp2 package as distributed by SLES.
An issue was discovered in Envoy 1.12.0. An untrusted remote client may send an HTTP header (such as Host) with whitespace after the header content. Envoy will treat "header-value " as a different string from "header-value" so for example with the Host header "example.com " one could bypass "example.com" matchers.
References
- https://www.suse.com/security/cve/CVE-2019-18802.html
- https://bugzilla.suse.com/1159003
- https://bugzilla.suse.com/1166481
- https://groups.google.com/forum/#!forum/envoy-users
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00034.html
- https://blog.envoyproxy.io
- https://github.com/envoyproxy/envoy/commits/master
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-356m-vhw2-wcm4
- https://groups.google.com/forum/#%21forum/envoy-users