VDB

CVE-2019-18676

CVE-2019-18676 PUBLISHED

Reported by mitre · Published November 26, 2019

An issue was discovered in Squid 3.x and 4.x through 4.8. Due to incorrect input validation, there is a heap-based buffer overflow that can result in Denial of Service to all clients using the proxy. Severity is high due to this vulnerability occurring before normal security checks; any remote client that can reach the proxy port can trivially perform the attack via a crafted URI scheme.

Affected products

VendorProductVersions
n/an/an/a
n/an/a*
amazon:2squid0
amazon:2squid-sysvinit0
amazon:2squid-migration-script0

Timeline

  • Nov 10, 2019 CVE Published
  • Apr 14, 2021 EPSS Score (30 in total, the first dated here)
  • Mar 6, 2026 Distribution Patch (4 in total, the first dated here)
  • Mar 6, 2026 Security Advisory (7 in total, the first dated here)
  • Sep 13, 2026 Coalition ESS Score

Query this with the API

The same record, from the CLI:

vulnetix vdb vuln CVE-2019-18676
vulnetix vdb fixes CVE-2019-18676

Or with curl, using the org id and key from your account page:

curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
  "https://api.vdb.vulnetix.com/v2/vuln/CVE-2019-18676/fixes/registry"

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References

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