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Gentoo: GLSA-202009-14 Critical: Xen Buffer Overflow Risk

gentoo
Calendar Grey September 29, 2020
Dist Gentoo Esm H88
Gentoo Linux Security Bulletin GLSA 202110-57: Severe vulnerability in OpenSSL permits unauthorized data access.
A buffer overflow in Xen might allow remote attacker(s) to execute arbitrary code.

Summary

An out-of-bounds read/write access issue was found in the USB emulator when using QEMU.

Topics%20covered

Topics Covered

security advisory buffer overflow remote code execution gentoo linux normal severity xen buffer

Resolution

All Xen users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=app-emulation/xen-4.13.1-r3"
All Xen tools users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot -v ">=app-emulation/xen-tools-4.13.1-r3"

References

[ 1 ] CVE-2020-14364 https://nvd.nist.gov/vuln/detail/CVE-2020-14364 [ 2 ] XSA-335 https://xenbits.xen.org/xsa/advisory-335.html

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/202009-14
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Concerns

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.

Severity
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Severity: Normal
Title: Xen: Buffer overflow
Date: September 29, 2020
Bugs: #738040
ID: 202009-14

Topics%20covered

Topics Covered

security advisory buffer overflow remote code execution gentoo linux normal severity xen buffer

Synopsis

A buffer overflow in Xen might allow remote attacker(s) to execute arbitrary code.

Background

Xen is a bare-metal hypervisor.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 app-emulation/xen < 4.13.1-r3 >= 4.13.1-r3 2 app-emulation/xen-tools < 4.13.1-r3 >= 4.13.1-r3 ------------------------------------------------------------------- 2 affected packages

Impact

===== A remote attacker could possibly execute arbitrary code with the privileges of the process or cause a Denial of Service condition.

Workaround

There is no known workaround at this time.

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