Ubuntu update for GD Graphics Library



Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2018-14553
CVE-2019-11038
CWE-ID CWE-476
CWE-125
Exploitation vector Network
Public exploit N/A
Vulnerable software
 libgd2 (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) NULL pointer dereference

EUVDB-ID: #VU26344

Risk: Low

CVSSv4.0: 0.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-14553

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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

The vulnerability exists due to a NULL pointer dereference error within the gdImageClone() function in gd.c file in libgd. A remote attacker can trigger denial of service conditions via a specific function call sequence. Only affects PHP when linked with an external libgd (not bundled).

Mitigation

Update the affected packages.

Ubuntu 19.10
libgd-tools - 2.2.5-5.2ubuntu0.19.10.1
libgd3 - 2.2.5-5.2ubuntu0.19.10.1
Ubuntu 18.04 LTS
libgd-tools - 2.2.5-4ubuntu0.4
libgd3 - 2.2.5-4ubuntu0.4
Ubuntu 16.04 LTS
libgd-tools - 2.1.1-4ubuntu0.16.04.12
libgd3 - 2.1.1-4ubuntu0.16.04.12

Vulnerable software versions

libgd2 (Ubuntu package): 2.1.1-4ubuntu0.16.04.1 - 2.2.5-4ubuntu0.3

CPE2.3 External links

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


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) Out-of-bounds read

EUVDB-ID: #VU21274

Risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-11038

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in the gdImageCreateFromXbm() function in the GD Graphics Library (aka LibGD). A remote attacker can create a specially crafted image, pass it to the affected application, trigger out-of-bounds read error and read contents of memory on the system.



Mitigation

Update the affected packages.

Ubuntu 19.10
libgd-tools - 2.2.5-5.2ubuntu0.19.10.1
libgd3 - 2.2.5-5.2ubuntu0.19.10.1
Ubuntu 18.04 LTS
libgd-tools - 2.2.5-4ubuntu0.4
libgd3 - 2.2.5-4ubuntu0.4
Ubuntu 16.04 LTS
libgd-tools - 2.1.1-4ubuntu0.16.04.12
libgd3 - 2.1.1-4ubuntu0.16.04.12

Vulnerable software versions

libgd2 (Ubuntu package): 2.1.1-4ubuntu0.16.04.1 - 2.2.5-4ubuntu0.3

CPE2.3 External links

https://access.redhat.com/errata/RHSA-2019:2519
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=929821
https://bugs.php.net/bug.php?id=77973
https://bugzilla.redhat.com/show_bug.cgi?id=1724149
https://bugzilla.redhat.com/show_bug.cgi?id=1724432
https://bugzilla.suse.com/show_bug.cgi?id=1140118
https://bugzilla.suse.com/show_bug.cgi?id=1140120
https://github.com/libgd/libgd/issues/501
https://lists.debian.org/debian-lts-announce/2019/06/msg00003.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PKSSWFR2WPMUOIB5EN5ZM252NNEPYUTG/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WAZBVK6XNYEIN7RDQXESSD63QHXPLKWL/


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.



###SIDEBAR###