CVE-2024-27354

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
mitreCNA
---
---
CISA-ADPADP
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVEADP
---
---
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 25%
Debian logo
Debian Releases
Debian Product
Codename
php-phpseclib
bullseye
2.0.30-2+deb11u2
fixed
bullseye (security)
vulnerable
bookworm
2.0.42-1+deb12u2
fixed
bookworm (security)
vulnerable
sid
2.0.48-3
fixed
trixie
2.0.48-3
fixed
php-phpseclib3
bookworm
3.0.19-1+deb12u3
fixed
bookworm (security)
vulnerable
sid
3.0.43-2
fixed
trixie
3.0.43-2
fixed
phpseclib
bullseye
1.0.19-3+deb11u2
fixed
bullseye (security)
vulnerable
bookworm
1.0.20-1+deb12u2
fixed
bookworm (security)
vulnerable
sid
1.0.23-6
fixed
trixie
1.0.23-6
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
php-phpseclib
plucky
not-affected
oracular
not-affected
noble
not-affected
mantic
ignored
jammy
Fixed 2.0.36-1ubuntu0.1~esm2
released
focal
Fixed 2.0.23-2ubuntu0.1~esm2
released
bionic
Fixed 2.0.9-1ubuntu0.1~esm2
released
xenial
Fixed 2.0.1-1ubuntu0.1~esm2
released
trusty
dne
php-phpseclib3
plucky
not-affected
oracular
not-affected
noble
not-affected
mantic
ignored
jammy
Fixed 3.0.13-1ubuntu0.1~esm1
released
focal
dne
bionic
dne
xenial
dne
trusty
dne
phpseclib
plucky
not-affected
oracular
not-affected
noble
not-affected
mantic
ignored
jammy
Fixed 1.0.20-1ubuntu0.1~esm1
released
focal
Fixed 1.0.18-2ubuntu0.1~esm1
released
bionic
Fixed 1.0.9-1ubuntu0.1~esm1
released
xenial
Fixed 1.0.1-3ubuntu0.1+esm1
released
trusty
ignored
Common Weakness Enumeration
References
https://gist.github.com/katzj/ee72f3c2a00590812b2ea3c0c8890e0b
https://github.com/phpseclib/phpseclib/blob/master/phpseclib/Math/PrimeField.php#L49
https://lists.debian.org/debian-lts-announce/2024/03/msg00002.html
https://lists.debian.org/debian-lts-announce/2024/03/msg00003.html
https://gist.github.com/katzj/ee72f3c2a00590812b2ea3c0c8890e0b
https://github.com/phpseclib/phpseclib/blob/master/phpseclib/Math/PrimeField.php#L49
https://lists.debian.org/debian-lts-announce/2024/03/msg00002.html
https://lists.debian.org/debian-lts-announce/2024/03/msg00003.html