CVE-2023-39279 — SonicOS post-authentication Stack-Based Buffer Overflow vulnerability in the get

SonicOS post-authentication Stack-Based Buffer Overflow vulnerability in the getPacketReplayData.json URL endpoint leads to a firewall crash.

01What is this vulnerability?

SonicOS post-authentication Stack-Based Buffer Overflow vulnerability in the getPacketReplayData.json URL endpoint leads to a firewall crash.

02Affected products

Vendor	Product	Versions
SonicWall	SonicOS	7.0.1-5119 and earlier versions, 7.0.1-5129 and earlier versions, 6.5.4.4-44v-21-2079 and earlier versions, 6.5.4.12-101n and earlier versions

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

Open in Sigma generator →

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-10-17T22:15:00.711Z
• Last modified: 2024-09-13T16:00:49.830Z

09References

• psirt.global.sonicwall.com — https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2023-0012