CVE-2017-9372

PJSIP, as used in Asterisk Open Source 13.x before 13.15.1 and 14.x before 14.4.1, Certified Asterisk 13.13 before 13.13-cert4, and other products, allows remote attackers to cause a denial of service (buffer overflow and application crash) via a SIP packet with a crafted CSeq header in conjunction with a Via header that lacks a branch parameter.

Published: 2017-06-02 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2017-9372 is rated Moderate Risk (61.5/100): CVSS High severity, with medium exploitation likelihood (EPSS 3.99%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2017-9372

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 3.66% 3.99% +0.33%
2 2025-03-30 4.52% 3.66% -0.86%
3 2025-03-29 — 4.52% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2017-9372

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.0 HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2017-9372

OS Trackers for CVE-2017-9372

vendor priority summary link
ubuntu medium CVE-2017-9372 medium priority: Ubuntu including 1 source packages (pjproject), 6 status rows across 6 suites (artful, trusty, upstream, xenial, yakkety, zesty): released 3, ignored 2, not-affected 1. https://ubuntu.com/security/CVE-2017-9372

Affected software / configurations for CVE-2017-9372

Vendor Product Version Raw CPE
digium open_source 13.0.0 cpe:2.3:a:digium:open_source:13.0.0:*:*:*:*:*:*:*
digium open_source 13.1.0 cpe:2.3:a:digium:open_source:13.1.0:*:*:*:*:*:*:*
digium open_source 13.1.0 cpe:2.3:a:digium:open_source:13.1.0:rc1:*:*:*:*:*:*
digium open_source 13.1.0 cpe:2.3:a:digium:open_source:13.1.0:rc2:*:*:*:*:*:*
digium open_source 13.2.0 cpe:2.3:a:digium:open_source:13.2.0:*:*:*:*:*:*:*
digium open_source 13.2.0 cpe:2.3:a:digium:open_source:13.2.0:rc1:*:*:*:*:*:*
digium open_source 13.3.0 cpe:2.3:a:digium:open_source:13.3.0:rc1:*:*:*:*:*:*
digium open_source 13.4.0 cpe:2.3:a:digium:open_source:13.4.0:*:*:*:*:*:*:*
digium open_source 13.4.0 cpe:2.3:a:digium:open_source:13.4.0:rc1:*:*:*:*:*:*
digium open_source 13.5.0 cpe:2.3:a:digium:open_source:13.5.0:*:*:*:*:*:*:*
digium open_source 13.5.0 cpe:2.3:a:digium:open_source:13.5.0:rc1:*:*:*:*:*:*
digium open_source 13.6.0 cpe:2.3:a:digium:open_source:13.6.0:rc1:*:*:*:*:*:*
digium open_source 13.7.0 cpe:2.3:a:digium:open_source:13.7.0:*:*:*:*:*:*:*
digium open_source 13.7.0 cpe:2.3:a:digium:open_source:13.7.0:rc1:*:*:*:*:*:*
digium open_source 13.8.0 cpe:2.3:a:digium:open_source:13.8.0:*:*:*:*:*:*:*
digium open_source 13.8.0 cpe:2.3:a:digium:open_source:13.8.0:rc1:*:*:*:*:*:*
digium open_source 13.8.1 cpe:2.3:a:digium:open_source:13.8.1:*:*:*:*:*:*:*
digium open_source 13.8.2 cpe:2.3:a:digium:open_source:13.8.2:*:*:*:*:*:*:*
digium open_source 13.9.0 cpe:2.3:a:digium:open_source:13.9.0:*:*:*:*:*:*:*
digium open_source 13.9.0 cpe:2.3:a:digium:open_source:13.9.0:rc1:*:*:*:*:*:*
digium open_source 13.10.0 cpe:2.3:a:digium:open_source:13.10.0:rc1:*:*:*:*:*:*
digium open_source 13.11.0 cpe:2.3:a:digium:open_source:13.11.0:rc1:*:*:*:*:*:*
digium open_source 13.12.0 cpe:2.3:a:digium:open_source:13.12.0:*:*:*:*:*:*:*
digium open_source 13.12.0 cpe:2.3:a:digium:open_source:13.12.0:rc1:*:*:*:*:*:*
digium open_source 13.12.1 cpe:2.3:a:digium:open_source:13.12.1:*:*:*:*:*:*:*
digium open_source 13.12.2 cpe:2.3:a:digium:open_source:13.12.2:*:*:*:*:*:*:*
digium open_source 13.13.0 cpe:2.3:a:digium:open_source:13.13.0:rc1:*:*:*:*:*:*
digium open_source 13.14.0 cpe:2.3:a:digium:open_source:13.14.0:rc1:*:*:*:*:*:*
digium open_source 13.15.0 cpe:2.3:a:digium:open_source:13.15.0:rc1:*:*:*:*:*:*
digium open_source 14.0.0 cpe:2.3:a:digium:open_source:14.0.0:*:*:*:*:*:*:*
digium open_source 14.0.0 cpe:2.3:a:digium:open_source:14.0.0:beta1:*:*:*:*:*:*
digium open_source 14.0.0 cpe:2.3:a:digium:open_source:14.0.0:beta2:*:*:*:*:*:*
digium open_source 14.0.0 cpe:2.3:a:digium:open_source:14.0.0:rc1:*:*:*:*:*:*
digium open_source 14.1.0 cpe:2.3:a:digium:open_source:14.1.0:rc1:*:*:*:*:*:*
digium open_source 14.2.0 cpe:2.3:a:digium:open_source:14.2.0:*:*:*:*:*:*:*
digium open_source 14.2.0 cpe:2.3:a:digium:open_source:14.2.0:rc1:*:*:*:*:*:*
digium open_source 14.2.0 cpe:2.3:a:digium:open_source:14.2.0:rc2:*:*:*:*:*:*
digium open_source 14.2.1 cpe:2.3:a:digium:open_source:14.2.1:*:*:*:*:*:*:*
digium open_source 14.3.0 cpe:2.3:a:digium:open_source:14.3.0:rc1:*:*:*:*:*:*
digium open_source 14.4.0 cpe:2.3:a:digium:open_source:14.4.0:rc1:*:*:*:*:*:*
digium certified_asterisk 13.13.0 cpe:2.3:a:digium:certified_asterisk:13.13.0:*:*:*:*:*:*:*
digium certified_asterisk 13.13.0 cpe:2.3:a:digium:certified_asterisk:13.13.0:cert1:*:*:*:*:*:*
digium certified_asterisk 13.13.0 cpe:2.3:a:digium:certified_asterisk:13.13.0:cert1-rc1:*:*:*:*:*:*
digium certified_asterisk 13.13.0 cpe:2.3:a:digium:certified_asterisk:13.13.0:cert1-rc2:*:*:*:*:*:*
digium certified_asterisk 13.13.0 cpe:2.3:a:digium:certified_asterisk:13.13.0:cert1-rc3:*:*:*:*:*:*
digium certified_asterisk 13.13.0 cpe:2.3:a:digium:certified_asterisk:13.13.0:cert1-rc4:*:*:*:*:*:*
digium certified_asterisk 13.13.0 cpe:2.3:a:digium:certified_asterisk:13.13.0:cert2:*:*:*:*:*:*
digium certified_asterisk 13.13.0 cpe:2.3:a:digium:certified_asterisk:13.13.0:cert3:*:*:*:*:*:*
digium certified_asterisk 13.13.0 cpe:2.3:a:digium:certified_asterisk:13.13.0:rc1:*:*:*:*:*:*
digium certified_asterisk 13.13.0 cpe:2.3:a:digium:certified_asterisk:13.13.0:rc2:*:*:*:*:*:*

References for CVE-2017-9372

cvelogic Threat Intelligence