CVE-2024-34702Botan has a Denial of Service Due to Excessive Name Constraints
- 5.3MediumCVSS base score
- 0.84%Exploitation in 30 daysEPSS · top 41% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Botan is a C++ cryptography library. X.509 certificates can identify elliptic curves using either an object identifier or using explicit encoding of the parameters. Prior to 3.5.0 and 2.19.5, checking name constraints in X.509 certificates is quadratic in the number of names and name constraints. An attacker who presented a certificate chain which contained a very large number of names in the SubjectAlternativeName, signed by a CA certificate which contained a large number of name constraints, could cause a denial of service. The problem has been addressed in Botan 3.5.0 and a partial backport has also been applied and is included in Botan 2.19.5.
Timeline
ID reserved
By GitHub_M
- 2 months later
· 2 months later
Published
- 25 days later
· 25 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
| NVDNVD · Deferred | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
- EPSS (exploitation in 30 days)
- 0.84% · top 41% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Affected products
References
References13
- https://github.com/randombit/botan/security/advisories/GHSA-5gg9-hqpr-r58j (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://github.com/randombit/botan/pull/4034 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/randombit/botan/pull/4045 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/randombit/botan/pull/4047 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/randombit/botan/pull/4052 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/randombit/botan/pull/4186 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/randombit/botan/pull/4187 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/randombit/botan/commit/21dccc8fef18c165ba3301d850ac61521f85637e (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/randombit/botan/commit/39535f13c322f56aa3da2f44b2b6abb8619a82ac (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/randombit/botan/commit/477822a2d10f02d8ba46c9d8a5132f25843f5cc1 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/randombit/botan/commit/7606d70d3a2ac7114476ec2651ca0243c4536fdf (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/randombit/botan/commit/c3264821b9f6286ee4e6e3e06826f6b7177e6d41 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/randombit/botan/commit/ff704b12e6fa351aaedd07bffdc91722e84586b8 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2024-34997 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2024-34702)Record last updated .