musl libc before 1.1.17 has a buffer overflow via crafted DNS replies because dns_parse_callback in network/lookup_name.c does not restrict the number of addresses, and thus an attacker can provide an unexpected number by sending A records in a reply to an AAAA query.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - musl libc before 1.1.17 has a buffer overflow via crafted DNS replies because dns_parse_callback in
    network/lookup_name.c does not restrict the number of addresses, and thus an attacker can provide an
    unexpected number by sending A records in a reply to an AAAA query. (CVE-2017-15650)

The remote Ubuntu 16.04 ESM host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4768-1 advisory.

    It was discovered that musl did not properly handle kernel syscalls. An attacker could use this     vulnerability to cause a denial of service (crash) or possibly execute arbitrary code. (CVE-2018-1000001)

    It was discovered that musl did not properly handle the parsing of DNS response codes. A remote attacker     could use this vulnerability to cause resource consumption (infinite loop), denial of service, or possibly     execute arbitrary code. This issue only affected Ubuntu 14.04 ESM. (CVE-2014-3484)

    It was discovered that musl did not properly handle the parsing of DNS response codes. A remote attacker     could use this vulnerability to cause resource consumption (infinite loop), denial of service, or possibly     execute arbitrary code. This issue only affected Ubuntu 16.04 ESM. (CVE-2017-15650)

    It was discovered that musl did not properly handle the parsing of ipv6 addresses. An attacker could use     this vulnerability to cause a denial of service (crash) or possibly execute arbitrary code. This issue     only affected Ubuntu 14.04 ESM. (CVE-2015-1817)

    It was discovered that TRE library, used by musl, did not properly handle certain inputs. An attacker     could use this vulnerability to cause a denial of service (crash). (CVE-2016-8859)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
405666	Alpine: musl: security update to 1.1.16-r14	Tenable Cloud Security	Alpine Linux Local Security Checks	high
405666	Alpine: musl: security update to 1.1.16-r14	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	high
405665	Alpine: musl: security update to 1.1.15-r8	Tenable Cloud Security	Alpine Linux Local Security Checks	high
405665	Alpine: musl: security update to 1.1.15-r8	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	high
405663	Alpine: musl: security update to 1.1.14-r16	Tenable Cloud Security	Alpine Linux Local Security Checks	high
405663	Alpine: musl: security update to 1.1.14-r16	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	high
405661	Alpine: musl: security update to 1.1.12-r8	Tenable Cloud Security	Alpine Linux Local Security Checks	high
405661	Alpine: musl: security update to 1.1.12-r8	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	high
405659	Alpine: musl: security update to 1.1.11-r5	Tenable Cloud Security	Alpine Linux Local Security Checks	high
405659	Alpine: musl: security update to 1.1.11-r5	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	high
183587	Ubuntu 16.04 ESM : musl vulnerabilities (USN-4768-1)	Nessus	Ubuntu Local Security Checks	critical

Detections

Analytics

CVE-2017-15650

high

Tenable Plugins

high

high

high

high

high

high

high

high

high

high

critical