Path Traversal in Bytecode Viewer Project
CVE-2022-21675
Bytecode Viewer (BCV) is a Java/Android reverse engineering suite. Versions of the package prior to 2.11.0 are vulnerable to Arbitrary File Write via Archive Extraction (AKA "Zip Slip"). The vulnerability is exploited using a specially crafted archive that holds directory traversal filenames (e.g. ../../evil.exe). The Zip Slip vulnerability can affect numerous archive formats, including zip, jar, tar, war, cpio, apk, rar and 7z. The attacker can then overwrite executable files and either invoke them remotely or wait for the system or user to call them, thus achieving remote command execution on the victim’s machine. The impact of a Zip Slip vulnerability would allow an attacker to create or overwrite existing files on the filesystem. In the context of a web application, a web shell could be placed within the application directory to achieve code execution. All users should upgrade to BCV v2.11.0 when possible to receive a patch. There are no recommended workarounds aside from upgrading.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:H.
EPSS exploit prediction
EPSS: 0.025 (84.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 84.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.025 · newest: 0.025 · change: 0.000
Affected products
- Bytecode Viewer Project
- Konloch Bytecode-Viewer — versions < 2.11.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/Konloch/bytecode-viewer/security/advisories/GHSA-3wq9-j4fc-4wmc (Patch, Third Party Advisory)
- github.com/Konloch/bytecode-viewer/commit/1ec02658fe6858162f5e6a24f97928de6696c… (Patch, Third Party Advisory)
- github.com/Konloch/bytecode-viewer/commit/c968e94b2c93da434a4ecfac6d08eda162d61… (Patch, Third Party Advisory)
- github.com/Konloch/bytecode-viewer/releases/tag/v2.11.0 (Third Party Advisory, Release Notes)
Frequently asked questions
- What is CVE-2022-21675?
- CVE-2022-21675 is a critical-severity vulnerability in Bytecode Viewer Project, classified under Path Traversal. CVSS score: 9.9/10. Published 2022-01-12.
- How severe is CVE-2022-21675?
- Critical severity. CVSS v3 base score is 9.9 out of 10.
- Is CVE-2022-21675 known to be exploited?
- 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.