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jvnJapan Vulnerability NotesJVN:77718330
HistoryFeb 27, 2015 - 12:00 a.m.

JVN#77718330: Vulnerability in the jBCrypt key stretching process

2015-02-2700:00:00
Japan Vulnerability Notes
jvn.jp
18

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

0.005 Low

EPSS

Percentile

75.9%

jBCrypt is a Java implementation to compute password hashes. jBCrypt contains an integer overflow vulnerability in the key stretching process. An integer overflow occurs when the parameter for the repetition count is set to the maximum value allowed, 31.

Impact

When the hash value for a password is obtained by a remote attacker, a brute force attack may be used to easily recover the password.

Solution

Update the Software
Update to the latest version according to the information provided by the developer.

Products Affected

  • jBCrypt-0.3 and earlier

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

0.005 Low

EPSS

Percentile

75.9%