Fedora 37 update for mujs



Risk High
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2022-44789
CVE-2022-30975
CVE-2022-30974
CWE-ID CWE-416
CWE-476
CWE-674
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
 Fedora
Operating systems & Components / Operating system

mujs
Operating systems & Components / Operating system package or component

Vendor Fedoraproject

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU69667

Risk: High

CVSSv4.0: 8.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]

CVE-ID: CVE-2022-44789

CWE-ID: CWE-416 - Use After Free

Exploit availability: Yes

Description

The 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.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 37

mujs: before 1.3.2-1.fc37

CPE2.3 External links

https://bodhi.fedoraproject.org/updates/FEDORA-2022-c4b56e4400


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) NULL pointer dereference

EUVDB-ID: #VU69666

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-30975

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 jsP_dumpsyntax() function in jsdump.c. A remote attacker can perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 37

mujs: before 1.3.2-1.fc37

CPE2.3 External links

https://bodhi.fedoraproject.org/updates/FEDORA-2022-c4b56e4400


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) Uncontrolled Recursion

EUVDB-ID: #VU69665

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-30974

CWE-ID: CWE-674 - Uncontrolled Recursion

Exploit availability: No

Description

The 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.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 37

mujs: before 1.3.2-1.fc37

CPE2.3 External links

https://bodhi.fedoraproject.org/updates/FEDORA-2022-c4b56e4400


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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