Vulnerability Details : CVE-2017-16872
An issue was discovered in Teluu pjproject (pjlib and pjlib-util) in PJSIP before 2.7.1. Parsing the numeric header fields in a SIP message (like cseq, ttl, port, etc.) all had the potential to overflow, either causing unintended values to be captured or, if the values were subsequently converted back to strings, a buffer overrun. This will lead to a potential exploit using carefully crafted invalid values.
Vulnerability category: Overflow
Exploit prediction scoring system (EPSS) score for CVE-2017-16872
Probability of exploitation activity in the next 30 days: 0.28%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 64 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2017-16872
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST |
|
9.8
|
CRITICAL | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2017-16872
-
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-2017-16872
-
https://trac.pjsip.org/repos/milestone/release-2.7.1
Milestone release-2.7.1 – pjsip Open source SIP, media, and NAT traversal stacks/libraries for smartphonesRelease Notes;Vendor Advisory
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https://www.debian.org/security/2018/dsa-4170
Debian -- Security Information -- DSA-4170-1 pjprojectThird Party Advisory
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https://trac.pjsip.org/repos/ticket/2056
#2056 (Add validity checking for numeric header values) – pjsip Open source SIP, media, and NAT traversal stacks/libraries for smartphonesVendor Advisory
Products affected by CVE-2017-16872
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:a:teluu:pjsip:*:*:*:*:*:*:*:*