CVE-2022-26477: Denial of service in readExternal method
First published: Mon Jun 27 2022(Updated: )
The Security Team noticed that the termination condition of the for loop in the readExternal method is a controllable variable, which, if tampered with, may lead to CPU exhaustion. As a fix, we added an upper bound and termination condition in the read and write logic. We classify it as a "low-priority but useful improvement". SystemDS is a distributed system and needs to serialize/deserialize data but in many code paths (e.g., on Spark broadcast/shuffle or writing to sequence files) the byte stream is anyway protected by additional CRC fingerprints. In this particular case though, the number of decoders is upper-bounded by twice the number of columns, which means an attacker would need to modify two entries in the byte stream in a consistent manner. By adding these checks robustness was strictly improved with almost zero overhead. These code changes are available in versions higher than 2.2.1.
Credit: security@apache.org security@apache.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Apache Systemds | <=2.2.1 | |
| pip/systemds | >=0<2.2.2 | 2.2.2 |
| maven/org.apache.systemds:systemds | <2.2.2 | 2.2.2 |
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Reference Links
- https://lists.apache.org/thread/r4x2d2r6d4zykdrrx6s2l4qbxgzws0z3
- https://security.netapp.com/advisory/ntap-20220812-0003/
- https://nvd.nist.gov/vuln/detail/CVE-2022-26477
- https://github.com/pypa/advisory-database/tree/main/vulns/systemds/PYSEC-2022-222.yaml
- https://github.com/advisories/GHSA-m43h-hfrq-x8wx (Advisory)
- https://security.netapp.com/advisory/ntap-20220812-0003
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