Vulnerability in Qemu
CVE-2020-10702
A flaw was found in QEMU in the implementation of the Pointer Authentication (PAuth) support for ARM introduced in version 4.0 and fixed in version 5.0.0. A general failure of the signature generation process caused every PAuth-enforced pointer to be signed with the same signature. A local attacker could obtain the signature of a protected pointer and abuse this flaw to bypass PAuth protection for all programs running on QEMU.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (23.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 23.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Qemu
- The Qemu Project — versions >= 4.0.0, < 5.0.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- git.qemu.org/
- security.netapp.com/advisory/ntap-20200724-0007/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-10702?
- CVE-2020-10702 is a medium-severity vulnerability in Qemu, classified under Missing Cryptographic Step. CVSS score: 5.5/10. Published 2020-06-04.
- How severe is CVE-2020-10702?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2020-10702 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.