Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Qemu | Qemu | >= 4.0.0, < 5.0.0 |
Related Weaknesses (CWE)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10702Issue TrackingThird Party Advisory
- https://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=de0b1bae6461f67243282555475f88b2
- https://security.netapp.com/advisory/ntap-20200724-0007/Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10702Issue TrackingThird Party Advisory
- https://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=de0b1bae6461f67243282555475f88b2
- https://security.netapp.com/advisory/ntap-20200724-0007/Third Party Advisory
FAQ
What is CVE-2020-10702?
CVE-2020-10702 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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...
How severe is CVE-2020-10702?
CVE-2020-10702 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-10702?
Check the references section above for vendor advisories and patch information. Affected products include: Qemu Qemu.