CVE-2023-43669
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.62%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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).
- 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
- 1.62% probability · 75th percentile
- CISA KEV
- Not listed
- Affected
- snapview/tungstenite · fedoraproject/fedora
- Source
- cve@mitre.org
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2240110Issue Tracking, Third Party Advisory
- https://bugzilla.suse.com/show_bug.cgi?id=1215563Issue Tracking, Third Party Advisory
- https://crates.io/crates/tungstenite/versionsRelease Notes
- https://cwe.mitre.org/data/definitions/407.htmlTechnical Description
- https://github.com/advisories/GHSA-9mcr-873m-xcxpThird Party Advisory
- https://github.com/github/advisory-database/pull/2752Patch
- https://github.com/snapview/tungstenite-rs/commit/8b3ecd3cc0008145ab4bc8d0657c39d09db8c7e2Patch
- https://github.com/snapview/tungstenite-rs/issues/376Exploit, Issue Tracking
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R77EUWPZVP5WSMNXUXUDNHR7G7OI5NGM/Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/THK6G6CD4VW6RCROWUV2C4HSINKK3XAK/Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TT7SF6CQ5VHAGFLWNXY64NFSW4WIWE7D/Mailing List, Third Party Advisory
- https://security-tracker.debian.org/tracker/CVE-2023-43669Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2240110Issue Tracking, Third Party Advisory
- https://bugzilla.suse.com/show_bug.cgi?id=1215563Issue Tracking, Third Party Advisory
- https://crates.io/crates/tungstenite/versionsRelease Notes
- https://cwe.mitre.org/data/definitions/407.htmlTechnical Description
- https://github.com/advisories/GHSA-9mcr-873m-xcxpThird Party Advisory
- https://github.com/github/advisory-database/pull/2752Patch
- https://github.com/snapview/tungstenite-rs/commit/8b3ecd3cc0008145ab4bc8d0657c39d09db8c7e2Patch
- https://github.com/snapview/tungstenite-rs/issues/376Exploit, Issue Tracking
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R77EUWPZVP5WSMNXUXUDNHR7G7OI5NGM/Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/THK6G6CD4VW6RCROWUV2C4HSINKK3XAK/Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TT7SF6CQ5VHAGFLWNXY64NFSW4WIWE7D/Mailing List, Third Party Advisory
- https://security-tracker.debian.org/tracker/CVE-2023-43669Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.