PT-2015-5628 · Crypt++ · Libcrypt++

Evgeny Sidorov · Published 2015-06-29 · Updated 2024-06-15 · CVE-2015-2141

Positive Technologies (AI Summary)

CVSS v2.0

5.0

Medium

Base vector

AV:N/AC:L/Au:N/C:P/I:N/A:N

Name of the Vulnerable Software and Affected Versions libcrypt++ version 5.6.2

Description The issue concerns the InvertibleRWFunction::CalculateInverse function in libcrypt++, which fails to properly blind private key operations for the Rabin-Williams digital signature algorithm. This oversight allows remote attackers to obtain private keys via a timing attack.

Recommendations For libcrypt++ version 5.6.2, consider disabling the InvertibleRWFunction::CalculateInverse function until a patch is available to prevent potential exploitation. Restrict access to private key operations to minimize the risk of obtaining private keys through a timing attack. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

CVE-2015-2141

DLA-262-1

DSA-3296-1

MGASA-2015-0317

OPENSUSE-SU-2024:10336-1

Affected Products

Libcrypt++

References · 24

• https://security-tracker.debian.org/tracker/DSA-3296-1 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2141 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2015-2141 · Vendor Advisory
• http://debian.org/security/2015/dsa-3296 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2015-2141 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2015-2141 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2015-2141 · Vendor Advisory
• https://debian.org/security/2015/dsa-3296 · Vendor Advisory
• https://ubuntu.com/security/CVE-2015-2141 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2015-0317.html · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2024:10336-1 · Vendor Advisory
• http://lists.opensuse.org/opensuse-updates/2015-07/msg00047.html · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2015-2141 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2015-2141 · Security Note
• https://security-tracker.debian.org/tracker/source-package/libcrypto++ · Vendor Advisory