Vulnerability · Published Jun 4, 2020 · Assigned by redhat

CVE-2020-10702

Medium 5.5

In plain English

A medium-severity security flaw in qemu from The QEMU Project. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.5Medium

Exploit odds (30 days)0.3%top 73.6% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:12	qemu	1:4.2-5	DEBIAN-CVE-2020-10702
Debian:13	qemu	1:4.2-5	DEBIAN-CVE-2020-10702
Debian:14	qemu	1:4.2-5	DEBIAN-CVE-2020-10702

Affected products (as reported)

Vendor	Product	Versions
The QEMU Project	qemu	>= 4.0.0, < 5.0.0

Weakness: CWE-325 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10702 x_refsource_CONFIRM
https://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=de0b1bae6461f67243282555475f88b2384a1eb9 x_refsource_CONFIRM
https://security.netapp.com/advisory/ntap-20200724-0007/ x_refsource_CONFIRM