CVE-2022-26477
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.14%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 2.14% probability · 81th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-400
- Affected
- apache/systemds
- Source
- security@apache.org
References
- https://lists.apache.org/thread/r4x2d2r6d4zykdrrx6s2l4qbxgzws0z3Mailing List, Vendor Advisory
- https://security.netapp.com/advisory/ntap-20220812-0003/Third Party Advisory
- https://lists.apache.org/thread/r4x2d2r6d4zykdrrx6s2l4qbxgzws0z3Mailing List, Vendor Advisory
- https://security.netapp.com/advisory/ntap-20220812-0003/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.