CVE-2020-10702 Security feature bypass in qemu
A flaw in QEMU's ARM Pointer Authentication allows local attackers to bypass PAuth protection by exploiting identical signatures for all protected pointers.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-10702?
CVE-2020-10702 is a medium-severity vulnerability in Qemu Qemu, published on 4 Jun 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-325
Which versions are affected by CVE-2020-10702?
It affects 1 product.
Products include Qemu Qemu.
How do I fix CVE-2020-10702?
Upgrade to a fixed version.
Is CVE-2020-10702 being exploited?
There is no known exploitation of CVE-2020-10702 in the wild and no public exploit code.
Other vulnerabilities in Qemu Qemu
Sources
Also known as DEBIAN-CVE-2020-10702, GHSA-g793-9qm5-f3q5, UBUNTU-CVE-2020-10702.