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Fencer Intel
high 7.5

CVE-2015-3200 json

mod_auth in lighttpd before 1.4.36 allows remote attackers to inject arbitrary log entries via a basic HTTP authentication string without a…

published 2015-06-09 11 y ago modified 2026-06-17 4 mo ago also EUVD-2015-3266

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
9.9%
EPSS 9.9% chance of exploitation in 30 days, percentile 95%
public exploits
0
none known

Summary

mod_auth in lighttpd before 1.4.36 allows remote attackers to inject arbitrary log entries via a basic HTTP authentication string without a colon character, as demonstrated by a string containing a NULL and new line character.

Patch / fix

  • lighttpd Debian 14, Debian 13, Debian 12 1.4.37-1

debian advisories DEBIAN-CVE-2015-3200

  • lighttpd Ubuntu Pro 14.04 LTS 1.4.33-1+nmu2ubuntu2.1+esm1
  • lighttpd Ubuntu Pro 16.04 LTS 1.4.35-4ubuntu2.1+esm1

ubuntu advisories UBUNTU-CVE-2015-3200

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • lighttpd SLES for SAP 12, SLE High Availability Extension 12 SP2, SLE High Availability Extension 12 SP1 1.4.35-3.1
  • lighttpd SLES for SAP 11 SP4, SLE Software Development Kit 11 SP4, SLE High Availability Extension 11 SP4 1.4.20-2.58.1

suse advisories SUSE-SU-2017:0728-1SUSE-SU-2017:0731-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2015-3200 updated cvss 5.0

lighttpd: log injection via malformed base64 string in Authentication header

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

9.91% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • jaanuskp.blogspot.com http://jaanuskp.blogspot.com/2015/05/cve-2015-3200.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:P/A:N

Classification

Weakness
  • CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.