Home/CVE/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
CVE

CVE-2018-12435

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

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.

MEDIUM · CVSS 5.9 EPSS 0.00071
Schedule remediation
  • Public exploit or PoC is available
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
▤

Affected Products & Versions

1
botan project botan>= 2.5.0 and <= 2.7.0
⚠

Public Exploits & PoCs

1
pocwww.nccgroup.trust · technical-advisory-return-of-the-hidden-number-problemwww.nccgroup.trust
▣

Scoring & Timeline

5.9
MEDIUM · CVSS v3.0 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD15 Jun 2018 · 02:29 AM
CVSS VectorCVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
⚑

Vendor Advisories

1
suse-csafopenSUSE-SU-2024:10594-1
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://botan.randombit.net/security.htmlThird Party Advisory
https://github.com/randombit/botan/commit/48fc8df51d99f9d8ba251219367b3d629cc848e3PatchThird Party Advisory
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