libslirp up to 4.3.0 SLiRP Networking icmp6_send_echoreply ICMP Echo Request out-of-bounds read

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6.1$0-$5k0.00

A vulnerability has been found in libslirp up to 4.3.0 and classified as problematic. Affected by this vulnerability is the function icmp6_send_echoreply of the component SLiRP Networking. The manipulation as part of a ICMP Echo Request leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-125. As an impact it is known to affect confidentiality. The summary by CVE is:

An out-of-bounds read vulnerability was found in the SLiRP networking implementation of the QEMU emulator. This flaw occurs in the icmp6_send_echoreply() routine while replying to an ICMP echo request, also known as ping. This flaw allows a malicious guest to leak the contents of the host memory, resulting in possible information disclosure. This flaw affects versions of libslirp before 4.3.1.

The weakness was presented 07/09/2020 as Bug 1835986 as not defined bug report (Bugzilla). It is possible to read the advisory at bugzilla.redhat.com. This vulnerability is known as CVE-2020-10756 since 03/20/2020. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 4.3.1 eliminates this vulnerability.

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CPE 2.3infoedit

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CVSSv3infoedit

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔒

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

NVD Base Score: 🔒

Exploitinginfoedit

Class: Information disclosure (CWE-125)
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfoedit

Threat: 🔍
Adversaries: 🔍
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Countermeasuresinfoedit

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: libslirp 4.3.1

Timelineinfoedit

03/20/2020 CVE assigned
07/09/2020 +111 days Advisory disclosed
07/10/2020 +1 days VulDB entry created
10/29/2020 +111 days VulDB last update

Sourcesinfoedit

Advisory: Bug 1835986
Status: Not defined
Confirmation: 🔒

CVE: CVE-2020-10756 (🔒)

Entryinfoedit

Created: 07/10/2020 08:05 AM
Updated: 10/29/2020 09:49 AM
Changes: (1) advisory_confirm_url
Complete: 🔍

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