Debian update for mujs
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2022-30974 CVE-2022-30975 CVE-2022-44789 |
| CWE-ID | CWE-674 CWE-476 CWE-416 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #3 is available. |
| Vulnerable software Subscribe |
Debian Linux Operating systems & Components / Operating system mujs (Debian package) Operating systems & Components / Operating system package or component |
| Vendor | Debian |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Uncontrolled Recursion
EUVDB-ID: #VU69665
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-2022-30974
CWE-ID:
CWE-674 - Uncontrolled Recursion
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a regular expression denial of service (DoS) attack.
The vulnerability exists due to unlimited recursion within the compile() function in regexp.cc. A remote attacker can pass a specially crafted string to the application and consume all available CPU resources on the system. MitigationUpdate mujs package to version 1.1.0-1+deb11u2.
Vulnerable software versionsDebian Linux: All versions
mujs (Debian package): before 1.1.0-1+deb11u2
External linkshttp://www.debian.org/security/2022/dsa-5291
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) NULL pointer dereference
EUVDB-ID: #VU69666
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-2022-30975
CWE-ID:
CWE-476 - NULL Pointer Dereference
Exploit availability: No
DescriptionThe 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 jsP_dumpsyntax() function in jsdump.c. A remote attacker can perform a denial of service (DoS) attack.
MitigationUpdate mujs package to version 1.1.0-1+deb11u2.
Vulnerable software versionsDebian Linux: All versions
mujs (Debian package): before 1.1.0-1+deb11u2
External linkshttp://www.debian.org/security/2022/dsa-5291
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) Use-after-free
EUVDB-ID: #VU69667
Risk: High
CVSSv3.1: 8.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2022-44789
CWE-ID:
CWE-416 - Use After Free
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error when processing JavaScript files within the O_getOwnPropertyDescriptor() function. A remote attacker can pass a specially crafted JavaScript file to the application, trigger a use-after-free error and execute arbitrary code on the system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
MitigationUpdate mujs package to version 1.1.0-1+deb11u2.
Vulnerable software versionsDebian Linux: All versions
mujs (Debian package): before 1.1.0-1+deb11u2
External linkshttp://www.debian.org/security/2022/dsa-5291
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.
