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
Products affected by CVE-2017-16872
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:a:teluu:pjsip:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-16872
0.28%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 64 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-16872
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
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
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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-2017-16872
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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
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