PT-2020-2147 · Videolabs+1 · Libmicrodns+1
Published
2020-03-24
·
Updated
2025-01-28
·
CVE-2020-6078
CVSS v3.1
7.5
High
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Videolabs libmicrodns version 0.1.0
Description
The issue is related to the message-parsing functionality. When parsing mDNS messages in
mdns recv, the return value of the mdns read header function is not checked, leading to an uninitialized variable usage that eventually results in a null pointer dereference, causing the service to crash. An attacker can send a series of mDNS messages to trigger this issue. The vulnerability may also allow a remote attacker to cause a denial-of-service or execute arbitrary code using a specially crafted request.Recommendations
For Videolabs libmicrodns version 0.1.0, consider disabling the
mdns recv function or restricting the parsing of mDNS messages until a patch is available. Additionally, restrict access to the mdns read header function to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.Exploit
DoS
Buffer Overflow
NULL Pointer Dereference
Unchecked Return Value
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Related Identifiers
Affected Products
Ubuntu
Libmicrodns