Heap-based Buffer Overflow Affecting qemu-img-ma package, versions <10:2.12.0-18.el7_6.4
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL7-QEMUIMGMA-4897656
- published26 Jul 2021
- disclosed14 Dec 2018
Introduced: 14 Dec 2018
CVE-2018-20815 (opens in a new tab)How to fix?
Upgrade RHEL:7 qemu-img-ma to version 10:2.12.0-18.el7_6.4 or higher.
This issue was patched in RHSA-2019:1881.
NVD Description
Note: Versions mentioned in the description apply only to the upstream qemu-img-ma package and not the qemu-img-ma package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
In QEMU 3.1.0, load_device_tree in device_tree.c calls the deprecated load_image function, which has a buffer overflow risk.
References
- https://seclists.org/bugtraq/2019/Aug/41
- https://access.redhat.com/security/cve/CVE-2018-20815
- https://www.debian.org/security/2019/dsa-4506
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BOE3PVFPMWMXV3DGP2R3XIHAF2ZQU3FS/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RVDHJB2QKXNDU7OFXIHIL5O5VN5QCSZL/
- https://git.qemu.org/?p=qemu.git;a=commitdiff;h=da885fe1ee8b4589047484bd7fa05a4905b52b17
- https://access.redhat.com/errata/RHSA-2019:1881
- https://git.qemu.org/?p=qemu.git%3Ba=commitdiff%3Bh=da885fe1ee8b4589047484bd7fa05a4905b52b17
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BOE3PVFPMWMXV3DGP2R3XIHAF2ZQU3FS/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RVDHJB2QKXNDU7OFXIHIL5O5VN5QCSZL/