Vulnerability · Published Aug 18, 2022 · Assigned by redhat
CVE-2020-27788
Medium 5.5
In plain English
A medium-severity out-of-bounds read in upx. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.3%top 73.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
An out-of-bounds read access vulnerability was discovered in UPX in PackLinuxElf64::canPack() function of p_lx_elf.cpp file. An attacker with a crafted input file could trigger this issue that could cause a crash leading to a denial of service.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:13 | upx-ucl | 3.96-1 | DEBIAN-CVE-2020-27788 |
| Debian:14 | upx-ucl | 3.96-1 | DEBIAN-CVE-2020-27788 |
Affected products (as reported)
Weakness: CWE-125
References
- https://github.com/upx/upx/issues/332 x_refsource_MISC
- https://github.com/upx/upx/commit/1bb93d4fce9f1d764ba57bf5ac154af515b3fc83 x_refsource_MISC