Vulnerability Details : CVE-2020-27801
A heap-based buffer over-read was discovered in the get_le64 function in bele.h in UPX 4.0.0 via a crafted Mach-O file.
Vulnerability category: Overflow
Products affected by CVE-2020-27801
- cpe:2.3:a:upx_project:upx:4.0.0:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-27801
0.08%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 33 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-27801
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.8
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST |
CWE ids for CVE-2020-27801
-
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.Assigned by: secalert@redhat.com (Secondary)
-
The product reads data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-27801
-
https://github.com/upx/upx/issues/394
Heap buffer overflow in get_le64() · Issue #394 · upx/upx · GitHubExploit;Third Party Advisory
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