Vulnerability Details : CVE-2020-27787
Potential exploit
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.
Vulnerability category: OverflowDenial of service
Products affected by CVE-2020-27787
- cpe:2.3:a:upx_project:upx:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-27787
0.05%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 17 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-27787
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2020-27787
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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)
References for CVE-2020-27787
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https://github.com/upx/upx/issues/333
Segmentation fault in PackLinuxElf64::invert_pt_dynamic at p_lx_elf.cpp:5173 · Issue #333 · upx/upx · GitHubExploit;Issue Tracking;Patch;Third Party Advisory
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https://github.com/upx/upx/commit/e2f60adc95334f47e286838dac33160819c5d74d
Detect 0==DT_SYMTAB in invert_pt_dynamic() · upx/upx@e2f60ad · GitHubPatch;Third Party Advisory
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