CVE-2023-36192: Sngrep v1.6.0 was discovered to contain a heap buffer overflow via the function capture_ws_check_packet at /sr

Routine

HIGH 7.8DOWNGRADE

CVE-2023-36192 is a high-severity flaw (CVSS 7.8) affecting sngrep. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Sngrep v1.6.0 was discovered to contain a heap buffer overflow via the function capture_ws_check_packet at /src/capture.c.

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.3% (top 76%)
CISA exploited list	No
Weakness	CWE-787
Published	2023-06-23
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: irontec

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-06-23 02:15 UTCPublished CVE record published
2026-06-17 06:05 UTCUpdated Record last modified

irontec sngrep DOWNGRADE

Affected: 1.6.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.6.0

1. Check installed version

apt-cache policy sngrep || rpm -q sngrep || sngrep --version

2. No fixed release: DOWNGRADE to a release before 1.6.0 (Debian / Ubuntu)

apt-cache madison sngrep sudo apt install sngrep=<VERSION_BEFORE_1.6.0> sudo apt-mark hold sngrep

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list sngrep sudo dnf downgrade sngrep-<VERSION_BEFORE_1.6.0> sudo dnf versionlock add sngrep

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-36192?

sngrep: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-36192 being exploited?

CVE-2023-36192 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-36192 affect?

CVE-2023-36192 affects sngrep. Severity is high (CVSS 7.8). Sngrep v1.6.0 was discovered to contain a heap buffer overflow via the function capture_ws_check_packet at /src/capture.c.

How urgent is CVE-2023-36192?

Priority 38/100. High severity; Public exploit reference

Related CVEs

CVE-2024-3120 CRITICAL 9.0 UPGRADE A stack-buffer overflow vulnerability exists in all versions of sngrep since v1.4.1
CVE-2024-3119 CRITICAL 9.0 UPGRADE A buffer overflow vulnerability exists in all versions of sngrep since v0.4.2, due to improper handling of 'Ca
CVE-2024-35434 HIGH 7.5 DOWNGRADE Irontec Sngrep v1.8.1 was discovered to contain a heap buffer overflow via the function rtp_check_packet at /s
CVE-2023-31982 HIGH 7.8 DOWNGRADE Sngrep v1.6.0 was discovered to contain a heap buffer overflow via the function capture_packet_reasm_ip at /sr
CVE-2023-31981 HIGH 7.8 DOWNGRADE Sngrep v1.6.0 was discovered to contain a stack buffer overflow via the function packet_set_payload at /src/pa

References

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