Arch Linux update for ghostscript
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2018-17961 CVE-2018-18073 CVE-2018-18284 |
| CWE-ID | CWE-94 CWE-264 |
| Exploitation vector | Network |
| Public exploit |
Public exploit code for vulnerability #1 is available. Public exploit code for vulnerability #3 is available. |
| Vulnerable software Subscribe |
Arch Linux Operating systems & Components / Operating system |
| Vendor | Arch Linux |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Code Injection
EUVDB-ID: #VU15376
Risk: High
CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2018-17961
CWE-ID:
CWE-94 - Improper Control of Generation of Code ('Code Injection')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to improper input validation that allows sandbox bypass via error handler setup vectors. A remote attacker can pass a specially crafted PostScript file to the affected application, inject and execute arbitrary code on the target system.
Note: this vulnerability exists due to insufficient patch for previously fixed Code injection vulnerability (CVE-2018-17183).
MitigationUpdate the affected package ghostscript to version 9.25-4.
Vulnerable software versionsArch Linux: All versions
External linkshttp://security.archlinux.org/advisory/ASA-201811-3
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. However, proof of concept for this vulnerability is available.
2) Security restrictions bypass
EUVDB-ID: #VU15748
Risk: Low
CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-18073
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass security restrictions on the target system.
The weakness exists due to exposure of system operators in the saved execution stack in an error object. A remote attacker can bypass a sandbox protection mechanism to conduct further attacks.
Update the affected package ghostscript to version 9.25-4.
Vulnerable software versionsArch Linux: All versions
External linkshttp://security.archlinux.org/advisory/ASA-201811-3
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) Code injection
EUVDB-ID: #VU15463
Risk: High
CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2018-18284
CWE-ID:
CWE-94 - Improper Control of Generation of Code ('Code Injection')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass the sandbox protection mechanism on the target system.
The vulnerability exists due to the failure of the sandbox protection mechanism of the affected software when the 1Policy operator is used. A remote unauthenticated attacker can trick the victim into accessing a PostScript file that submits malicious input, bypass the sandbox protection mechanism and modify or replace error handlers used by the software, which the attacker could use to inject and execute arbitrary code on the system.
MitigationUpdate the affected package ghostscript to version 9.25-4.
Vulnerable software versionsArch Linux: All versions
External linkshttp://security.archlinux.org/advisory/ASA-201811-3
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. However, proof of concept for this vulnerability is available.
