CVE-2024-3120 | Stack-Buffer Overflow in 'Content-Length' and 'Warning' Header Processing in sngrep

A stack-buffer overflow vulnerability exists in all versions of sngrep since v1.4.1. The flaw is due to inadequate bounds checking when copying 'Content-Length' and 'Warning' headers into fixed-size buffers in the sip_validate_packet and sip_parse_extra_headers functions within src/sip.c. This vulnerability allows remote attackers to execute arbitrary code or cause a denial of service (DoS) via crafted SIP messages.

Published: 2024-04-09 Last update: 2026-06-17 Assigner: 41c37e40-543d-43a2-b660-2fee83ea851a Source: 41c37e40-543d-43a2-b660-2fee83ea851a
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2024-3120 is rated Moderate Risk (60.9/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 1.80%). 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-2024-3120

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 3.38% 1.80% -1.58%
2 2026-04-08 1.95% 3.38% +1.43%
3 2025-11-21 — 1.95% —

Full EPSS history (16 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2024-3120

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.0 3.1 CRITICAL
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/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:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
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:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.2 6.0 41c37e40-543d-43a2-b660-2fee83ea851a
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]

Weakness enumeration for CVE-2024-3120

OS Trackers for CVE-2024-3120

vendor priority summary link
debian not yet assigned CVE-2024-3120 not yet assigned priority: Debian including 1 source packages (sngrep), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 3, open 2. https://security-tracker.debian.org/tracker/CVE-2024-3120
ubuntu medium CVE-2024-3120 medium priority: Ubuntu including 1 source packages (sngrep), 10 status rows across 10 suites (bionic, focal, jammy, mantic, noble, oracular, plucky, questing, upstream, xenial): needs-triage 7, ignored 3. https://ubuntu.com/security/CVE-2024-3120

Affected software / configurations for CVE-2024-3120

Vendor Product Version Raw CPE
irontec sngrep >= 1.4.1, < 1.8.1 cpe:2.3:a:irontec:sngrep:*:*:*:*:*:*:*:*

References for CVE-2024-3120

cvelogic Threat Intelligence