#VU45994 Out-of-bounds read in LuaJIT - CVE-2020-24372

Vulnerability identifier: #VU45994

Vulnerability 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-2020-24372

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
LuaJIT
Other software / Other software solutions

Vendor: siddhesh (Siddhesh Poyarekar)

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

LuaJIT through 2.1.0-beta3 has an out-of-bounds read in lj_err_run in lj_err.c.

Mitigation
Install update from vendor's website.

Vulnerable software versions

LuaJIT: 2.1.0

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External links
https://github.com/LuaJIT/LuaJIT/issues/603

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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.