Vulnerability Details : CVE-2018-12435
Potential exploit
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.
Vulnerability category: Information leak
Products affected by CVE-2018-12435
- cpe:2.3:a:botan_project:botan:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-12435
0.15%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 37 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-12435
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
1.9
|
LOW | AV:L/AC:M/Au:N/C:P/I:N/A:N |
3.4
|
2.9
|
NIST | |
|
5.9
|
MEDIUM | CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N |
1.4
|
4.0
|
NIST |
CWE ids for CVE-2018-12435
-
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-12435
-
https://www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem/
Technical Advisory: "ROHNP"- Key Extraction Side Channel in Multiple Crypto LibrariesExploit;Third Party Advisory
-
https://botan.randombit.net/security.html
Security Advisories — BotanThird Party Advisory
-
https://github.com/randombit/botan/commit/48fc8df51d99f9d8ba251219367b3d629cc848e3
Address DSA/ECDSA side channel · randombit/botan@48fc8df · GitHubPatch;Third Party Advisory
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