Multiple vulnerabilities in phpseclib

Published: 2024-02-27

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2024-27354 CVE-2024-27355
CWE-ID	CWE-20
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	phpseclib Web applications / Other software
Vendor	phpseclib

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU86826

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-27354

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input in isPrime() and randomPrime() functions. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

phpseclib: 1.0.0 - 3.0.35

CPE2.3

External links

http://github.com/phpseclib/phpseclib/releases/tag/3.0.36
http://github.com/phpseclib/phpseclib/releases/tag/2.0.47
http://github.com/phpseclib/phpseclib/releases/tag/1.0.23

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Input validation error

EUVDB-ID: #VU86829