PT-2015-4942 · Owasp+1 · Bcrypt+1

Marcus Rathsfeld · Published 2015-02-28 · Updated 2026-05-18 · CVE-2015-0886

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 jBCrypt versions prior to 0.4

Description The issue is related to an integer overflow in the crypt raw method within the key-stretching implementation. This makes it easier for remote attackers to determine the cleartext values of password hashes via a brute-force attack against hashes associated with the maximum exponent.

Recommendations For versions prior to 0.4, update to version 0.4 or later to resolve the issue. As a temporary workaround, consider restricting access to password hashes to minimize the risk of exploitation.

Fix

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

ALT-PU-2016-1073

CLEANSTART-2026-GH89210

CVE-2015-0886

GHSA-9H6P-92JQ-888X

Affected Products

Alt Linux

Bcrypt

References · 103

• http://jvndb.jvn.jp/jvndb/JVNDB-2015-000033 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-58057 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2024-47535 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2024-6763 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2022-24823 · Security Note
• https://bugzilla.mindrot.org/show_bug.cgi?id=2097 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-2976 · Security Note
• http://jvn.jp/en/jp/JVN77718330/index.html · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2015-0886 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-24970 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-44432 · Security Note
• https://osv.dev/vulnerability/GHSA-9h6p-92jq-888x · Vendor Advisory
• https://osv.dev/vulnerability/CLEANSTART-2026-GH89210 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-12801 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2024-13009 · Security Note