Vulnerability · Published Aug 18, 2022 · Assigned by redhat
CVE-2020-27787
Medium 5.5
In plain English
A medium-severity memory corruption in upx. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.4%top 64.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
A Segmentaation fault was found in UPX in invert_pt_dynamic() function in p_lx_elf.cpp. An attacker with a crafted input file allows invalid memory address access that could lead to a denial of service.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:13 | upx-ucl | 3.96-1 | DEBIAN-CVE-2020-27787 |
| Debian:14 | upx-ucl | 3.96-1 | DEBIAN-CVE-2020-27787 |
Affected products (as reported)
Weakness: CWE-119
References
- https://github.com/upx/upx/issues/333 x_refsource_MISC
- https://github.com/upx/upx/commit/e2f60adc95334f47e286838dac33160819c5d74d x_refsource_MISC