CVE-2015-0886: Integer Overflow
First published: Sat Feb 28 2015(Updated: )
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.
Credit: vultures@jpcert.or.jp
| Affected Software | Affected Version | How to fix |
|---|---|---|
| jBCrypt | <0.4 | |
| Fedora | =20 | |
| Fedora | =21 | |
| Fedora | =22 |
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Reference Links
- http://jvn.jp/en/jp/JVN77718330/index.html
- http://jvndb.jvn.jp/jvndb/JVNDB-2015-000033
- http://lists.fedoraproject.org/pipermail/package-announce/2015-March/151496.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-March/151786.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-March/151797.html
- http://www.mindrot.org/projects/jBCrypt/news/rel04.html
- https://bugzilla.mindrot.org/show_bug.cgi?id=2097
- https://lists.apache.org/thread.html/rbd23e3ac8113b4da0a025c0e45170b6ec317383a1cf06090c2c717aa@%3Ccommits.cassandra.apache.org%3E
- https://lists.apache.org/thread.html/rd5c2256b8dc9935e4bb5e9be90adce58408054bb42523730a40c5548@%3Ccommits.cassandra.apache.org%3E
- https://lists.apache.org/thread.html/re330cfe9e5d84e3f7da8ace23ec32f38cb3fbd328bf177badd7ad942@%3Ccommits.cassandra.apache.org%3E
- https://lists.apache.org/thread.html/rd5c2256b8dc9935e4bb5e9be90adce58408054bb42523730a40c5548%40%3Ccommits.cassandra.apache.org%3E
- https://lists.apache.org/thread.html/re330cfe9e5d84e3f7da8ace23ec32f38cb3fbd328bf177badd7ad942%40%3Ccommits.cassandra.apache.org%3E
- https://lists.apache.org/thread.html/rbd23e3ac8113b4da0a025c0e45170b6ec317383a1cf06090c2c717aa%40%3Ccommits.cassandra.apache.org%3E
Frequently Asked Questions
What is the severity of CVE-2015-0886?
CVE-2015-0886 has a moderate severity rating due to the potential for remote attackers to exploit the integer overflow vulnerability.
How do I fix CVE-2015-0886?
To fix CVE-2015-0886, upgrade jBCrypt to version 0.4 or later to eliminate the integer overflow issue.
What software is affected by CVE-2015-0886?
CVE-2015-0886 affects jBCrypt versions prior to 0.4 and Fedora versions 20, 21, and 22.
What is the impact of CVE-2015-0886?
The impact of CVE-2015-0886 allows remote attackers to perform brute-force attacks to determine cleartext password values.
When was CVE-2015-0886 publicly disclosed?
CVE-2015-0886 was publicly disclosed in March 2015.
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