MEDIUM
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
Published Jul 1, 2015
5.0
MEDIUMCVSS 2.0
EPSS 2.88%
Description
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.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:P/I:N/A:N
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact None
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
2.88% 0.02879
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
EPSS probability 0.02879
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 2.88% (0.02879) | 86.38th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.88% (0.02879) | 84.97th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.46% (0.00465) | 62.31th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.36% (0.00361) | 73.14th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.36% (0.00361) | 71.48th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.36% (0.00361) | 67.86th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.21% (0.01213) | 66.61th | v2 (v2022.01.01) |
| Feb 17, 2023 | 1.21% (0.01213) | 66.22th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.21% (0.01213) | 64.21th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.21% (0.01213) | 40.54th | v2 (v2022.01.01) |
Weaknesses (1)
References (5)
- http://lists.opensuse.org/opensuse-updates/2015-07/msg00047.html vendor-advisoryx_refsource_SUSE
- http://sourceforge.net/p/cryptopp/code/542/ x_refsource_CONFIRM
- http://www.debian.org/security/2015/dsa-3296 vendor-advisoryx_refsource_DEBIAN
- http://www.securityfocus.com/bid/75467 vdb-entryx_refsource_BID
- https://github.com/weidai11/cryptopp/commit/9425e16437439e68c7d96abef922167d68fafaff x_refsource_CONFIRM
| Link | Providers | Tags |
|---|---|---|
| http://lists.opensuse.org/opensuse-updates/2015-07/msg00047.html | vendor-advisoryx_refsource_SUSE | |
| http://sourceforge.net/p/cryptopp/code/542/ | x_refsource_CONFIRM | |
| http://www.debian.org/security/2015/dsa-3296 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.securityfocus.com/bid/75467 | vdb-entryx_refsource_BID | |
| https://github.com/weidai11/cryptopp/commit/9425e16437439e68c7d96abef922167d68fafaff | x_refsource_CONFIRM |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jul 1, 2015
Updated Aug 6, 2024
Reserved Feb 27, 2015
Link CVE-2015-2141
CISA Vulnrichment
Updated n/a