High severity7.5NVD Advisory· Published Sep 21, 2023· Updated Jun 17, 2026
CVE-2023-43669
CVE-2023-43669
Description
The Tungstenite crate before 0.20.1 for Rust allows remote attackers to cause a denial of service (minutes of CPU consumption) via an excessive length of an HTTP header in a client handshake. The length affects both how many times a parse is attempted (e.g., thousands of times) and the average amount of data for each parse attempt (e.g., millions of bytes).
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
tungstenitecrates.io | < 0.20.1 | 0.20.1 |
Affected products
4- Tungstenite/Tungstenitedescription
- osv-coords3 versions
< 0.147.2-r0+ 2 more
- (no CPE)range: < 0.147.2-r0
- (no CPE)range: < 0.147.2-r0
- (no CPE)range: < 0.20.1
Patches
Vulnerability mechanics
References
21- github.com/github/advisory-database/pull/2752nvdPatchWEB
- github.com/snapview/tungstenite-rs/commit/8b3ecd3cc0008145ab4bc8d0657c39d09db8c7e2nvdPatchWEB
- github.com/snapview/tungstenite-rs/issues/376nvdExploitIssue TrackingWEB
- bugzilla.redhat.com/show_bug.cginvdIssue TrackingThird Party AdvisoryWEB
- bugzilla.suse.com/show_bug.cginvdIssue TrackingThird Party AdvisoryWEB
- github.com/advisories/GHSA-9mcr-873m-xcxpnvdThird Party AdvisoryADVISORY
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R77EUWPZVP5WSMNXUXUDNHR7G7OI5NGM/nvdMailing ListThird Party Advisory
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/THK6G6CD4VW6RCROWUV2C4HSINKK3XAK/nvdMailing ListThird Party Advisory
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TT7SF6CQ5VHAGFLWNXY64NFSW4WIWE7D/nvdMailing ListThird Party Advisory
- nvd.nist.gov/vuln/detail/CVE-2023-43669ghsaADVISORY
- security-tracker.debian.org/tracker/CVE-2023-43669nvdThird Party AdvisoryWEB
- crates.io/crates/tungstenite/versionsnvdRelease NotesWEB
- cwe.mitre.org/data/definitions/407.htmlnvdTechnical DescriptionWEB
- github.com/snapview/tungstenite-rs/pull/379ghsaWEB
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R77EUWPZVP5WSMNXUXUDNHR7G7OI5NGMghsaWEB
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/THK6G6CD4VW6RCROWUV2C4HSINKK3XAKghsaWEB
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TT7SF6CQ5VHAGFLWNXY64NFSW4WIWE7DghsaWEB
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/R77EUWPZVP5WSMNXUXUDNHR7G7OI5NGMghsaWEB
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/THK6G6CD4VW6RCROWUV2C4HSINKK3XAKghsaWEB
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TT7SF6CQ5VHAGFLWNXY64NFSW4WIWE7DghsaWEB
- rustsec.org/advisories/RUSTSEC-2023-0065.htmlghsaWEB
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