Vulnerability Name:

CVE-2019-11935 (CCN-172576)

Assigned:2019-10-28
Published:2019-10-28
Updated:2019-12-11
Summary:Insufficient boundary checks when processing a string in mb_ereg_replace allows access to out-of-bounds memory. This issue affects HHVM versions prior to 3.30.12, all versions between 4.0.0 and 4.8.5, all versions between 4.9.0 and 4.23.1, as well as 4.24.0, 4.25.0, 4.26.0, 4.27.0, 4.28.0, and 4.28.1.
CVSS v3 Severity:9.8 Critical (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
8.5 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
6.5 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L)
5.7 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): None
Availibility (A): Low
CVSS v2 Severity:7.5 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
6.4 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-120
Vulnerability Consequences:Obtain Information
References:Source: MITRE
Type: CNA
CVE-2019-11935

Source: XF
Type: UNKNOWN
facebook-cve201911935-info-disc(172576)

Source: CCN
Type: hhvm GIT Repository
Fix buffer overflow in mb_ereg_replace

Source: CONFIRM
Type: Patch, Third Party Advisory
https://github.com/facebook/hhvm/commit/1c518555dba6ceb45d5ba61845b96e261219c3b7

Source: CONFIRM
Type: Vendor Advisory
https://hhvm.com/blog/2019/10/28/security-update.html

Source: CCN
Type: Facebook Web site
CVE-2019-11935

Source: CONFIRM
Type: Vendor Advisory
https://www.facebook.com/security/advisories/cve-2019-11935

Vulnerable Configuration:Configuration 1:
  • cpe:/a:facebook:hhvm:*:*:*:*:*:*:*:* (Version < 3.30.12)
  • OR cpe:/a:facebook:hhvm:*:*:*:*:*:*:*:* (Version >= 4.0.0 and <= 4.8.5)
  • OR cpe:/a:facebook:hhvm:*:*:*:*:*:*:*:* (Version >= 4.9.0 and <= 4.23.1)
  • OR cpe:/a:facebook:hhvm:4.24.0:*:*:*:*:*:*:*
  • OR cpe:/a:facebook:hhvm:4.25.0:*:*:*:*:*:*:*
  • OR cpe:/a:facebook:hhvm:4.26.0:*:*:*:*:*:*:*
  • OR cpe:/a:facebook:hhvm:4.27.0:*:*:*:*:*:*:*
  • OR cpe:/a:facebook:hhvm:4.28.0:*:*:*:*:*:*:*
  • OR cpe:/a:facebook:hhvm:4.28.1:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:facebook:hhvm:4.0.0:*:*:*:*:*:*:*
  • OR cpe:/a:facebook:hhvm:4.8.5:*:*:*:*:*:*:*
  • OR cpe:/a:facebook:hhvm:4.9.0:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.bionic:def:2019119350000000
    V
    		CVE-2019-11935 on Ubuntu 18.04 LTS (bionic) - medium.
    2019-12-04
    oval:com.ubuntu.xenial:def:2019119350000000
    V
    		CVE-2019-11935 on Ubuntu 16.04 LTS (xenial) - medium.
    2019-12-04
    BACK
    facebook hhvm *
    facebook hhvm *
    facebook hhvm *
    facebook hhvm 4.24.0
    facebook hhvm 4.25.0
    facebook hhvm 4.26.0
    facebook hhvm 4.27.0
    facebook hhvm 4.28.0
    facebook hhvm 4.28.1
    facebook hhvm 4.0.0
    facebook hhvm 4.8.5
    facebook hhvm 4.9.0