Bug 2267497 (CVE-2024-27354) - CVE-2024-27354 php-phpseclib: denial of service
Summary: CVE-2024-27354 php-phpseclib: denial of service
Keywords:
Status: NEW
Alias: CVE-2024-27354
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2267498 2267499
Blocks:
TreeView+ depends on / blocked
 
Reported: 2024-03-03 07:56 UTC by ybuenos
Modified: 2024-03-03 07:56 UTC (History)
0 users

Fixed In Version: php-phpseclib 1.0.23, php-phpseclib 2.0.47, php-phpseclib 3.0.36
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Description ybuenos 2024-03-03 07:56:21 UTC
An issue was discovered in phpseclib 1.x before 1.0.23, 2.x before 2.0.47, and 3.x before 3.0.36. An attacker can construct a malformed certificate containing an extremely large prime to cause a denial of service (CPU consumption for an isPrime primality check). NOTE: this issue was introduced when attempting to fix CVE-2023-27560.

https://gist.github.com/katzj/ee72f3c2a00590812b2ea3c0c8890e0b
https://github.com/phpseclib/phpseclib/blob/master/phpseclib/Math/PrimeField.php#L49

Comment 1 ybuenos 2024-03-03 07:56:39 UTC
Created php-phpseclib tracking bugs for this issue:

Affects: epel-all [bug 2267499]
Affects: fedora-all [bug 2267498]


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