CVE-2018-14553

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-02-11 · updated 2026-06-17
Weakness: CWE-476

Description

gdImageClone in gd.c in libgd 2.1.0-rc2 through 2.2.5 has a NULL pointer dereference allowing attackers to crash an application via a specific function call sequence. Only affects PHP when linked with an external libgd (not bundled).

Affected products

Canonical Ubuntu Linux: 14.04, 16.04, 18.04, 19.10
Debian Linux: 8.0
Fedoraproject Fedora: 32
Libgd: from 2.1.1 through 2.2.5; 2.1.0, 2.1.0-rc2
openSUSE Leap: 15.1

References

http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00020.html
https://bugzilla.redhat.com/show_bug.cgi?id=1599032
https://github.com/libgd/libgd/commit/a93eac0e843148dc2d631c3ba80af17e9c8c860f
https://github.com/libgd/libgd/pull/580
https://lists.debian.org/debian-lts-announce/2020/02/msg00014.html
https://lists.debian.org/debian-lts-announce/2024/04/msg00003.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3CZ2QADQTKRHTGB2AHD7J4QQNDLBEMM6/
https://usn.ubuntu.com/4316-1/
https://usn.ubuntu.com/4316-2/
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00020.html
https://bugzilla.redhat.com/show_bug.cgi?id=1599032
https://github.com/libgd/libgd/commit/a93eac0e843148dc2d631c3ba80af17e9c8c860f

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