CVE-2022-28805 Memory corruption in n/a
A heap-based buffer over-read in the Lua parser allows attackers to cause denial of service or disclose information by providing malicious Lua code.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-28805?
CVE-2022-28805 is a critical memory corruption vulnerability in Fedoraproject Fedora, published on 8 Apr 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
singlevar in lparser.c in Lua from (including) 5.4.0 up to (excluding) 5.4.4 lacks a certain luaK_exp2anyregup call, leading to a heap-based buffer over-read that might affect a system that compiles untrusted Lua code.
Weakness: CWE-125
Which versions are affected by CVE-2022-28805?
1 open source package ship an affected version, including lua. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
lua Bitnami | From 5.4.0 | 5.4.5 |
Linux distribution packages (17)
lua AlmaLinux:9 | All versions | 5.4.4-3.el9 |
lua-devel AlmaLinux:9 | All versions | 5.4.4-3.el9 |
lua-libs AlmaLinux:9 | All versions | 5.4.4-3.el9 |
lua Red Hat:enterprise_linux:9::appstream | All versions | 0:5.4.4-3.el9 |
lua-debuginfo Red Hat:enterprise_linux:9::appstream | All versions | 0:5.4.4-3.el9 |
lua-debugsource Red Hat:enterprise_linux:9::appstream | All versions | 0:5.4.4-3.el9 |
lua-libs-debuginfo Red Hat:enterprise_linux:9::appstream | All versions | 0:5.4.4-3.el9 |
lua Red Hat:enterprise_linux:9::baseos | All versions | 0:5.4.4-3.el9 |
lua-debuginfo Red Hat:enterprise_linux:9::baseos | All versions | 0:5.4.4-3.el9 |
lua-debugsource Red Hat:enterprise_linux:9::baseos | All versions | 0:5.4.4-3.el9 |
lua-libs Red Hat:enterprise_linux:9::baseos | All versions | 0:5.4.4-3.el9 |
lua-libs-debuginfo Red Hat:enterprise_linux:9::baseos | All versions | 0:5.4.4-3.el9 |
lua Red Hat:enterprise_linux:9::crb | All versions | 0:5.4.4-3.el9 |
lua-debuginfo Red Hat:enterprise_linux:9::crb | All versions | 0:5.4.4-3.el9 |
lua-debugsource Red Hat:enterprise_linux:9::crb | All versions | 0:5.4.4-3.el9 |
lua-devel Red Hat:enterprise_linux:9::crb | All versions | 0:5.4.4-3.el9 |
lua-libs-debuginfo Red Hat:enterprise_linux:9::crb | All versions | 0:5.4.4-3.el9 |
Products include Fedoraproject Fedora, Lua Lua.
How do I fix CVE-2022-28805?
Upgrade lua to 5.4.5 or later.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2022-28805 being exploited?
There is no known exploitation of CVE-2022-28805 in the wild and no public exploit code.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as ALPINE-CVE-2022-28805, ALSA-2023:2582, AZL-40812, AZL-9333, BIT-lua-2022-28805, DEBIAN-CVE-2022-28805 and 4 more.