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Integer Overflow or Wraparound in JBCrypt

Moderate severity GitHub Reviewed Published May 13, 2022 to the GitHub Advisory Database • Updated Jan 27, 2023

Package

maven org.mindrot:jbcrypt (Maven)

Affected versions

< 0.4

Patched versions

0.4

Description

Integer overflow in the crypt_raw method in the key-stretching implementation in JBCrypt before 0.4 makes it easier for remote attackers to determine cleartext values of password hashes via a brute-force attack against hashes associated with the maximum exponent.

References

Published by the National Vulnerability Database Feb 28, 2015
Published to the GitHub Advisory Database May 13, 2022
Reviewed Jul 6, 2022
Last updated Jan 27, 2023

Severity

Moderate

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(85th percentile)

Weaknesses

Integer Overflow or Wraparound

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number. Learn more on MITRE.

CVE ID

CVE-2015-0886

GHSA ID

GHSA-9h6p-92jq-888x

Source code

No known source code
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