Out-of-bounds Read in PHP
CVE-2019-11046
In PHP versions 7.2.x below 7.2.26, 7.3.x below 7.3.13 and 7.4.0, PHP bcmath extension functions on some systems, including Windows, can be tricked into reading beyond the allocated space by supplying it with string containing characters that are identified as numeric by the OS but aren't ASCII numbers. This can read to disclosure of the content of some memory locations.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.041 (90.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 90.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.041 · newest: 0.041 · change: 0.000
Affected products
- PHP — versions 7.4.0
- PHP Group — versions 7.2.x, 7.3.x, 7.4.x
- Tenable Security Center
- Tenable Securitycenter
- Canonical Ubuntu Linux — versions 12.04, 14.04, 16.04
- Debian Linux — versions 8.0, 9.0, 10.0
- Fedoraproject Fedora — versions 30, 31
- openSUSE Leap — versions 15.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugs.php.net/bug.php (Patch, Mailing List, Vendor Advisory)
- lists.debian.org/debian-lts-announce/2019/12/msg00034.html (mailing-list, Mailing List, Third Party Advisory)
- security.netapp.com/advisory/ntap-20200103-0002/ (Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- support.f5.com/csp/article/K48866433
- usn.ubuntu.com/4239-1/ (vendor-advisory, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-01/msg00036.html (vendor-advisory, Third Party Advisory)
- seclists.org/bugtraq/2020/Feb/27 (mailing-list, Mailing List, Third Party Advisory)
- www.debian.org/security/2020/dsa-4626 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-11046?
- CVE-2019-11046 is a low-severity vulnerability in PHP, classified under Out-of-bounds Read. CVSS score: 3.7/10. Published 2019-12-23.
- How severe is CVE-2019-11046?
- Low severity. CVSS v3 base score is 3.7 out of 10.
- Is CVE-2019-11046 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.