Remote code execution in Artifex Ghostscript

1) Insecure DLL loading

EUVDB-ID: #VU92102

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-2024-33871

CWE-ID: CWE-427 - Uncontrolled Search Path Element

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to the "Driver" parameter for the "opvp"/"oprp" device specifies the name of a dynamic library and allows any library to be loaded. A remote attacker can pass a specially crafted document to the application and execute arbitrary library on the system.

Successful exploitation of the vulnerability may allow an attacker to compromise the affected system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Ghostscript: 9.00 - 10.03.0

External links

http://bugzilla.redhat.com/show_bug.cgi?id=2283508
http://bugs.ghostscript.com/show_bug.cgi?id=707754
http://ghostscript.readthedocs.io/en/gs10.03.1/News.html
http://cgit.ghostscript.com/cgi-bin/cgit.cgi/ghostpdl.git/commit/?id=7145885041bb52cc23964f0aa2aec1b1c82b5908

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: #VU92284

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-33870

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to insufficient validation of user-supplied input when handling oaths. A remote attacker can pass specially crafted input to the application and execute arbitrary code on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Ghostscript: 9.00 - 10.03.0

External links

http://cgit.ghostscript.com/cgi-bin/cgit.cgi/ghostpdl.git/commit/?id=79aef19c685984dc3da2dc090450407d9fbcff80
http://ghostscript.readthedocs.io/en/gs10.03.1/News.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.

3) Format string error

EUVDB-ID: #VU92282

Risk: High

CVSSv3.1: 9.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2024-29510

CWE-ID: CWE-134 - Use of Externally-Controlled Format String

Exploit availability: Yes

Description

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

The vulnerability exists due to a format string error. A remote attacker can supply a specially crafted input that contains format string specifiers and execute arbitrary code on the target system.

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

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Ghostscript: 9.00 - 10.03.0

External links

http://cgit.ghostscript.com/cgi-bin/cgit.cgi/ghostpdl.git/commit/?id=3b1735085ecef20b29e8db3416ab36de93e86d1f
http://ghostscript.readthedocs.io/en/gs10.03.1/News.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?

Yes. This vulnerability is being exploited in the wild.

4) Input validation error

EUVDB-ID: #VU92283

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-33869

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to insufficient validation of user-supplied input when handling oaths. A remote attacker can pass specially crafted input to the application and execute arbitrary code on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Ghostscript: 9.00 - 10.03.0

External links

http://cgit.ghostscript.com/cgi-bin/cgit.cgi/ghostpdl.git/commit/?id=f5336e5b4154f515ac83bc5b9eba94302e6618d4
http://cgit.ghostscript.com/cgi-bin/cgit.cgi/ghostpdl.git/commit/?id=5ae2e320d69a7d0973011796bd388cd5befa1a43
http://ghostscript.readthedocs.io/en/gs10.03.1/News.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.

5) Path traversal

EUVDB-ID: #VU93816

Risk: Low

CVSSv3.1: 2.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-29511

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences when Tesseract is used for OCR. A remote attacker can view arbitrary files on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Ghostscript: 9.00 - 10.03.0

External links

http://bugs.ghostscript.com/show_bug.cgi?id=707510
http://git.ghostscript.com/?p=ghostpdl.git%3Ba=commitdiff%3Bh=3d4cfdc1a44
http://www.openwall.com/lists/oss-security/2024/07/03/7

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.