Ubuntu update for giflib



Risk High
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2021-40633
CVE-2022-28506
CVE-2023-39742
CWE-ID CWE-401
CWE-122
CWE-119
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Ubuntu
Operating systems & Components / Operating system

giflib-tools (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Memory leak

EUVDB-ID: #VU87206

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-40633

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak within the gif2rgb() function in util/gif2rgb.c. A remote attacker can force the application to leak memory and perform denial of service attack.

Mitigation

Update the affected package giflib to the latest version.

Vulnerable software versions

Ubuntu: 16.04 - 23.10

giflib-tools (Ubuntu package): before Ubuntu Pro

CPE2.3 External links

http://ubuntu.com/security/notices/USN-6824-1


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) Heap-based buffer overflow

EUVDB-ID: #VU87207

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-28506

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the DumpScreen2RGB() function in gif2rgb.c. A remote attacker can pass specially crafted file to the application, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update the affected package giflib to the latest version.

Vulnerable software versions

Ubuntu: 16.04 - 23.10

giflib-tools (Ubuntu package): before Ubuntu Pro

CPE2.3 External links

http://ubuntu.com/security/notices/USN-6824-1


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.

3) Buffer overflow

EUVDB-ID: #VU80867

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-2023-39742

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error in getarg.c. A remote attacker can pass a specially crafted input to the application, trigger memory corruption and perform a denial of service (DoS) attack.

Mitigation

Update the affected package giflib to the latest version.

Vulnerable software versions

Ubuntu: 16.04 - 23.10

giflib-tools (Ubuntu package): before Ubuntu Pro

CPE2.3 External links

http://ubuntu.com/security/notices/USN-6824-1


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.



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