Vulnerability Monitor

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CVE-2021-30500

Null pointer dereference was found in upx PackLinuxElf::canUnpack() in p_lx_elf.cpp,in version UPX 4.0.0. That allow attackers to execute arbitrary code and cause a denial of service via a crafted file.

Published

2021-05-27T00:15:08.483

Last Modified

2025-04-11T12:27:55.013

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.8 (HIGH)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:P/I:P/A:P

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

8.6

Impact Score

6.4

Weaknesses

Type: Primary
CWE-476

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	upx	upx	4.0.0	Yes
Operating System	redhat	enterprise_linux	7.0	Yes
Operating System	fedoraproject	fedora	33	Yes

References

https://bugzilla.redhat.com/show_bug.cgi?id=1948692 Issue Tracking, Third Party Advisory ([email protected])
https://github.com/upx/upx/commit/90279abdfcd235172eab99651043051188938dcc Patch, Third Party Advisory ([email protected])
https://github.com/upx/upx/issues/485 Exploit, Issue Tracking, Third Party Advisory ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=1948692 Issue Tracking, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/upx/upx/commit/90279abdfcd235172eab99651043051188938dcc Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/upx/upx/issues/485 Exploit, Issue Tracking, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)