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Fencer Intel
medium 5.0

CVE-2015-2141 json

The InvertibleRWFunction::CalculateInverse function in rw.cpp in libcrypt++ 5.6.2 does not properly blind private key operations for the Ra…

published 11y ago modified 4mo ago also EUVD-2015-2251

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.9%
EPSS 2.9% chance of exploitation in 30 days, percentile 86%
public exploits
0
none known

Summary

The InvertibleRWFunction::CalculateInverse function in rw.cpp in libcrypt++ 5.6.2 does not properly blind private key operations for the Rabin-Williams digital signature algorithm, which allows remote attackers to obtain private keys via a timing attack.

Patch / fix

  • libcrypto++ Debian 14, Debian 13, Debian 12 5.6.1-7

debian advisories DEBIAN-CVE-2015-2141

  • libcrypto++ Ubuntu 14.04 LTS 5.6.1-6+deb8u1build0.14.04.1

ubuntu advisories UBUNTU-CVE-2015-2141

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libcryptopp openSUSE Tumbleweed 5.6.4-1.3

opensuse advisories openSUSE-SU-2024:10336-1

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Exploit prediction

2.86% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.