Information Exposure Affecting botan package, versions <2.6.0-3
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-DEBIAN10-BOTAN-268773
- published15 Jun 2018
- disclosed15 Jun 2018
Introduced: 15 Jun 2018
CVE-2018-12435 (opens in a new tab)How to fix?
Upgrade Debian:10 botan to version 2.6.0-3 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream botan package and not the botan package as distributed by Debian.
See How to fix? for Debian:10 relevant fixed versions and status.
Botan 2.5.0 through 2.6.0 before 2.7.0 allows a memory-cache side-channel attack on ECDSA signatures, aka the Return Of the Hidden Number Problem or ROHNP, related to dsa/dsa.cpp, ec_group/ec_group.cpp, and ecdsa/ecdsa.cpp. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.
References
- https://security-tracker.debian.org/tracker/CVE-2018-12435
- https://botan.randombit.net/security.html
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12435
- https://github.com/randombit/botan/commit/48fc8df51d99f9d8ba251219367b3d629cc848e3
- https://www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem/