Buffer overflow in thunderbird (Alpine package)



Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-23960
CWE-ID CWE-119
Exploitation vector Network
Public exploit N/A
Vulnerable software
 thunderbird (Alpine package)
Operating systems & Components / Operating system package or component

Vendor Alpine Linux Development Team

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Buffer overflow

EUVDB-ID: #VU50024

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-23960

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to insufficient validation of user-supplied input when performing garbage collection on re-declared JavaScript variables. A remote attacker can create a specially crafted web page, trick the victim into opening it and execute arbitrary code on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

thunderbird (Alpine package): 78.6.1-r0

CPE2.3 External links

https://git.alpinelinux.org/aports/commit/?id=eaba0ff6130a6125c2843679f827365a9903bd40


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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