Vulnerability · Published Jun 27, 2022 · Assigned by apache
CVE-2022-26477Denial of service in readExternal method
High 7.5
In plain English
A high-severity uncontrolled resource consumption in Apache SystemDS from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.3% (higher than 83% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Maven | org.apache.systemds:systemds | 2.2.2 | GHSA-m43h-hfrq-x8wx |
| PyPI | systemds | 2.2.2 | GHSA-m43h-hfrq-x8wx |
| PyPI | systemds | 2.2.2 | PYSEC-2022-222 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache SystemDS | unspecified – before 2.2.2 |
Weakness: CWE-400
References
- https://lists.apache.org/thread/r4x2d2r6d4zykdrrx6s2l4qbxgzws0z3 x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20220812-0003/ x_refsource_CONFIRM