Out-of-bounds read in LuaJIT



Published: 2020-07-22 | Updated: 2020-08-08
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-15890
CWE-ID CWE-125
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		LuaJIT
Other software / Other software solutions

Debian Linux
Operating systems & Components / Operating system

Vendor siddhesh (Siddhesh Poyarekar)
Debian

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Out-of-bounds read

EUVDB-ID: #VU34131

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-2020-15890

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

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 because __gc handler frame traversal is mishandled.

Mitigation

Install update from vendor's website.

Vulnerable software versions

LuaJIT: 2.1.0

Debian Linux: 2.1.0 - 9.0

External links

http://github.com/LuaJIT/LuaJIT/issues/601
http://lists.debian.org/debian-lts-announce/2020/07/msg00026.html


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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