Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Botan Project | Botan | >= 2.5.0, <= 2.7.0 |
Related Weaknesses (CWE)
References
- https://botan.randombit.net/security.htmlThird Party Advisory
- https://github.com/randombit/botan/commit/48fc8df51d99f9d8ba251219367b3d629cc848PatchThird Party Advisory
- https://www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hiddExploitThird Party Advisory
- https://botan.randombit.net/security.htmlThird Party Advisory
- https://github.com/randombit/botan/commit/48fc8df51d99f9d8ba251219367b3d629cc848PatchThird Party Advisory
- https://www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hiddExploitThird Party Advisory
FAQ
What is CVE-2018-12435?
CVE-2018-12435 is a vulnerability with a CVSS score of 5.9 (MEDIUM). 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.cp...
How severe is CVE-2018-12435?
CVE-2018-12435 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-12435?
Check the references section above for vendor advisories and patch information. Affected products include: Botan Project Botan.