CVE-2017-15650
musl libc before 1.1.17 has a buffer overflow via crafted DNS replies because dns_parse_callback...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
7.5
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.
- Record
CVE-2017-15650- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-119
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2017-15650- Updated
- 2026-11-02
EUVDEUVD-2017-7101 No score
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.
- Record
EUVD-2017-7101- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-p2mj-x9rf-q85j
7.5
musl libc before 1.1.17 has a buffer overflow via crafted DNS replies because dns_parse_callback...
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.
- Record
GHSA-p2mj-x9rf-q85j- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-119
- Updated
- 2026-11-02
OSVALPINE-CVE-2017-15650
7.5
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.
- Record
ALPINE-CVE-2017-15650- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSV
7.5
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.
- Record
CVE-2017-15650- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2017-15650
7.5
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.
- Record
DEBIAN-CVE-2017-15650- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2017-15650
7.5
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.
- Record
UBUNTU-CVE-2017-15650- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVUSN-4768-1 No score
musl vulnerabilities
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)
- Record
USN-4768-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
muslAlpine:v3.2 |
before 1.1.11-r5 | 1.1.11-r5 |
muslAlpine:v3.3 |
before 1.1.12-r8 | 1.1.12-r8 |
muslAlpine:v3.4 |
before 1.1.14-r16 | 1.1.14-r16 |
muslAlpine:v3.5 |
before 1.1.15-r8 | 1.1.15-r8 |
muslAlpine:v3.6 |
before 1.1.16-r14 | 1.1.16-r14 |
muslDebian:12 |
before 1.1.17-1 | 1.1.17-1 |
muslDebian:13 |
before 1.1.17-1 | 1.1.17-1 |
muslDebian:14 |
before 1.1.17-1 | 1.1.17-1 |
muslUbuntu:Pro:16.04:LTS |
before 1.1.9-1ubuntu0.1~esm2, plus listed versions 1.1.9-1 |
1.1.9-1ubuntu0.1~esm2 |
muslUbuntu:Pro:14.04:LTS From an advisory covering 5 CVEs |
before 0.9.15-1ubuntu0.1~esm1, plus listed versions 0.9.14-20.9.14-2ubuntu10.9.15-1 |
0.9.15-1ubuntu0.1~esm1 |
muslUbuntu:Pro:16.04:LTS From an advisory covering 5 CVEs |
before 1.1.9-1ubuntu0.1~esm2, plus listed versions 1.1.9-1 |
1.1.9-1ubuntu0.1~esm2 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2017-15650 is a high vulnerability (CVSS 7.5) in Musl-libc Musl, published October 19, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.03%, the 81st percentile. Fixed in musl 1.1.11-r5.
References
git.musl-libc.org/cgit/musl/commit?id=45ca5d3fcb6f874bf5ba55d0e9651cef68515395
git.musl-libc.org/cgit/musl/tree/WHATSNEW
openwall.com/lists/oss-security/2017/10/19/5
nvd.nist.gov/vuln/detail/CVE-2017-15650
github.com/advisories/GHSA-p2mj-x9rf-q85j
security.alpinelinux.org/vuln/CVE-2017-15650
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security-tracker.debian.org/tracker/CVE-2017-15650
ubuntu.com/security/CVE-2017-15650
git.musl-libc.org/cgit/musl/patch?id=45ca5d3fcb6f874bf5ba55d0e9651cef68515395
cve.org/CVERecord?id=CVE-2017-15650
ubuntu.com/security/notices/USN-4768-1
ubuntu.com/security/CVE-2014-3484
ubuntu.com/security/CVE-2015-1817
ubuntu.com/security/CVE-2016-8859
ubuntu.com/security/CVE-2018-1000001