Vulnerability in Juce
CVE-2021-23521
This affects the package juce-framework/JUCE before 6.1.5. This vulnerability is triggered when a malicious archive is crafted with an entry containing a symbolic link. When extracted, the symbolic link is followed outside of the target dir allowing writing arbitrary files on the target host. In some cases, this can allow an attacker to execute arbitrary code. The vulnerable code is in the ZipFile::uncompressEntry function in juce_ZipFile.cpp and is executed when the archive is extracted upon calling uncompressTo() on a ZipFile object.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (43.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 43.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/juce-framework/JUCE/commit/2e874e80cba0152201aff6a4d0dc407997d10a7f (Patch, Third Party Advisory)
- snyk.io/vuln/SNYK-UNMANAGED-JUCEFRAMEWORKJUCE-2388608 (Exploit, Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-23521?
- CVE-2021-23521 is a medium-severity vulnerability in Juce, classified under Improper Link Resolution Before File Access. CVSS score: 5.5/10. Published 2022-01-31.
- How severe is CVE-2021-23521?
- Medium severity. CVSS v3 base score is 5.5 out of 10.