CVE-2020-6080

An exploitable denial-of-service vulnerability exists in the resource allocation handling of Videolabs libmicrodns 0.1.0. When encountering errors while parsing mDNS messages, some allocated data is not freed, possibly leading to a denial-of-service condition via resource exhaustion. An attacker can send one mDNS message repeatedly to trigger this vulnerability through the function rrreadRR [5] reads the current resource record, except for the RDATA section. This is read by the loop at in rrread. For each RR type, a different function is called. When the RR type is 0x10, the function rrread_TXT is called at [6].

Database specific

{
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": "9.0"
                },
                {
                    "last_affected": "9.0"
                },
                {
                    "introduced": "10.0"
                },
                {
                    "last_affected": "10.0"
                }
            ],
            "cpes": [
                "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
                "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
            ],
            "source": "CPE_STRING",
            "vendor_product": "debian:debian_linux"
        }
    ]
}

References

Affected packages

Git / github.com/videolabs/libmicrodns

Affected ranges

Type

GIT

Repo

https://github.com/videolabs/libmicrodns

Events

Introduced

a12486a5aea85e0f3f02a3721855963b5f1e185f

Last affected

a12486a5aea85e0f3f02a3721855963b5f1e185f

Database specific

{
    "extracted_events": [
        {
            "introduced": "0.1.0"
        },
        {
            "last_affected": "0.1.0"
        }
    ],
    "cpe": "cpe:2.3:a:videolabs:libmicrodns:0.1.0:*:*:*:*:*:*:*",
    "source": "CPE_STRING"
}

Affected versions

0.*

0.1.0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-6080.json"