NULL pointer dereference in Upx
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 · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.012 (67.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 67.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
- Upx — versions 4.0.0
- Fedoraproject Fedora — versions 33
- Red Hat Enterprise Linux — versions 7.0
- Upx — versions upx 4.0
Weakness classification (CWE)
References
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- github.com/upx/upx/issues/485 (Exploit, Third Party Advisory, Issue Tracking)
- github.com/upx/upx/commit/90279abdfcd235172eab99651043051188938dcc (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-30500?
- CVE-2021-30500 is a high-severity vulnerability in Upx, classified under NULL Pointer Dereference. CVSS score: 7.8/10. Published 2021-05-27.
- How severe is CVE-2021-30500?
- High severity. CVSS v3 base score is 7.8 out of 10.