Vulnerability Details : CVE-2017-15650
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.
Vulnerability category: Overflow
Exploit prediction scoring system (EPSS) score for CVE-2017-15650
Probability of exploitation activity in the next 30 days: 0.41%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 70 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2017-15650
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
nvd@nist.gov |
|
7.5
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
nvd@nist.gov |
CWE ids for CVE-2017-15650
-
The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-15650
-
http://openwall.com/lists/oss-security/2017/10/19/5
oss-security - CVE request: musl libc 1.1.16 and earlier dns buffer overflowMailing List;Mitigation;Third Party Advisory
-
http://git.musl-libc.org/cgit/musl/tree/WHATSNEW
WHATSNEW - musl - musl - an implementation of the standard library for Linux-based systemsVendor Advisory
-
http://git.musl-libc.org/cgit/musl/commit/?id=45ca5d3fcb6f874bf5ba55d0e9651cef68515395
musl - musl - an implementation of the standard library for Linux-based systemsVendor Advisory
Products affected by CVE-2017-15650
- cpe:2.3:a:musl-libc:musl:*:*:*:*:*:*:*:*