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
Products affected by CVE-2017-15650
- cpe:2.3:a:musl-libc:musl:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-15650
0.41%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 70 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-15650
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
|
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
|
NIST |
CWE ids for CVE-2017-15650
-
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.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
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