Buffer overflow in Php
CVE-2019-11043
In PHP versions 7.1.x below 7.1.33, 7.2.x below 7.2.24 and 7.3.x below 7.3.11 in certain configurations of FPM setup it is possible to cause FPM module to write past allocated buffers into the space reserved for FCGI protocol data, thus op…
Vulnerability class: Buffer Overflow
EPSS: 0.995 (99.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N.
Affected products
- Php — versions 7.1.x, 7.2.x, 7.3.x
- Tenable Tenable.sc
- Canonical Ubuntu_linux — versions 12.04, 14.04, 16.04
- Debian Debian_linux — versions 9.0, 10.0
- Fedoraproject Fedora — versions 29, 30, 31
- Redhat Enterprise_linux — versions 8.0
- Redhat Enterprise_linux_desktop — versions 6.0, 7.0
- Redhat Enterprise_linux_eus — versions 7.7, 8.1, 8.2
- Redhat Enterprise_linux_eus_compute_node — versions 7.7
- Redhat Enterprise_linux_for_arm_64 — versions 8.0_aarch64
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Known ransomware campaign use: yes.
Public proof-of-concept exploits
References
- security@php.net (Exploit, Third Party Advisory, x_refsource_MISC)
- security@php.net (x_refsource_CONFIRM, Exploit, Patch, Issue Tracking, Vendor Advisory)
- security@php.net (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- security@php.net (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_DEBIAN)
- security@php.net (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_DEBIAN)
- security@php.net (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- security@php.net (x_refsource_CONFIRM, Third Party Advisory)
- security@php.net (x_refsource_FEDORA, vendor-advisory, Mailing List, Third Party Advisory)
- security@php.net (x_refsource_CONFIRM, Third Party Advisory)
- security@php.net (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-11043?
- CVE-2019-11043 is a high-severity vulnerability in Php, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.7/10. Published 2019-10-28.
- How severe is CVE-2019-11043?
- High severity. CVSS v3 base score is 8.7 out of 10.
- Is CVE-2019-11043 known to be exploited?
- Yes. CVE-2019-11043 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-25), indicating it is being actively exploited. 147 public proof-of-concept repositories are indexed.