Vulnerability in Apache Hadoop
CVE-2022-26612
In Apache Hadoop, The unTar function uses unTarUsingJava function on Windows and the built-in tar utility on Unix and other OSes. As a result, a TAR entry may create a symlink under the expected extraction directory which points to an external directory. A subsequent TAR entry may extract an arbitrary file into the external directory using the symlink name. This however would be caught by the same targetDirPath check on Unix because of the getCanonicalPath call. However on Windows, getCanonicalPath doesn't resolve symbolic links, which bypasses the check. unpackEntries during TAR extraction follows symbolic links which allows writing outside expected base directory on Windows. This was addressed in Apache Hadoop 3.2.3
EPSS: 0.042 (90.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Apache Hadoop — versions 3.3.1, 3.3.2
- Apache Software Foundation Hadoop — versions unspecified, 3.3.1, 3.3.2
- Microsoft Windows
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@apache.org (Exploit, x_refsource_MISC, Vendor Advisory)
- security@apache.org (x_refsource_CONFIRM, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-26612?
- CVE-2022-26612 is a critical-severity vulnerability in Apache Hadoop, classified under Improper Link Resolution Before File Access. CVSS score: 9.8/10. Published 2022-04-07.
- How severe is CVE-2022-26612?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2022-26612 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.