Headline
CVE-2022-47950: Arbitrary file access through custom S3 XML entities — OpenStack Security Advisories 0.0.1.dev258 documentation
An issue was discovered in OpenStack Swift before 2.28.1, 2.29.x before 2.29.2, and 2.30.0. By supplying crafted XML files, an authenticated user may coerce the S3 API into returning arbitrary file contents from the host server, resulting in unauthorized read access to potentially sensitive data. This impacts both s3api deployments (Rocky or later), and swift3 deployments (Queens and earlier, no longer actively developed).
OSSA-2023-001: Arbitrary file access through custom S3 XML entities¶
Date:
January 17, 2023
CVE:
CVE-2022-47950
Affects¶
- Swift: <2.28.1, >=2.29.0 <2.29.2, ==2.30.0
Description¶
Sébastien Meriot (OVH) reported a vulnerability in Swift’s S3 XML parser. By supplying specially crafted XML files an authenticated user may coerce the S3 API into returning arbitrary file contents from the host server resulting in unauthorized read access to potentially sensitive data; this impacts both s3api deployments (Rocky or later), and swift3 deployments (Queens and earlier, no longer actively developed). Only deployments with S3 compatibility enabled are affected.
Patches¶
https://review.opendev.org/870823 (2023.1/antelope)
https://review.opendev.org/870828 (Wallaby)
https://review.opendev.org/870827 (Xena)
https://review.opendev.org/870826 (Yoga)
https://review.opendev.org/870825 (Zed)
Credits¶
- Sébastien Meriot from OVH (CVE-2022-47950)
References¶
https://launchpad.net/bugs/1998625
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-47950
Notes¶
- The stable/wallaby branch is under extended maintenance and will receive no new point releases, but a patch for it is provided as a courtesy.
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