VulnerabilityModified
CVE-2021-24115
In Botan before 2.17.3, constant-time computations are not used for certain decoding and encoding operations (base32, base58, base64, and hex).
CRITICAL 9.8EPSS 1.98%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.98%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In Botan before 2.17.3, constant-time computations are not used for certain decoding and encoding operations (base32, base58, base64, and hex).
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.98% probability · 79th percentile
- CISA KEV
- Not listed
- Affected
- botan project/botan
- Source
- cve@mitre.org
References
- https://botan.randombit.net/news.htmlRelease Notes, Vendor Advisory
- https://github.com/randombit/botan/compare/2.17.2...2.17.3Patch, Third Party Advisory
- https://github.com/randombit/botan/pull/2549Patch, Third Party Advisory
- https://botan.randombit.net/news.htmlRelease Notes, Vendor Advisory
- https://github.com/randombit/botan/compare/2.17.2...2.17.3Patch, Third Party Advisory
- https://github.com/randombit/botan/pull/2549Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.