Vulnerability Name:

CVE-2016-9953 (CCN-140503)

Assigned:2016-11-29
Published:2016-11-29
Updated:2018-04-10
Summary:The verify_certificate function in lib/vtls/schannel.c in libcurl 7.30.0 through 7.51.0, when built for Windows CE using the schannel TLS backend, allows remote attackers to obtain sensitive information, cause a denial of service (crash), or possibly have unspecified other impact via a wildcard certificate name, which triggers an out-of-bounds read.
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-125
Vulnerability Consequences:Obtain Information
References:Source: MITRE
Type: CNA
CVE-2016-9953

Source: CONFIRM
Type: Vendor Advisory
https://curl.haxx.se/CVE-2016-9952.patch

Source: CCN
Type: Project curl Security Advisory
Win CE schannel cert name out of buffer read

Source: CONFIRM
Type: Vendor Advisory
https://curl.haxx.se/docs/adv_20161221C.html

Source: XF
Type: UNKNOWN
libcurl-cve20169953-info-disc(140503)

Vulnerable Configuration:Configuration 1:
  • cpe:/a:haxx:curl:*:*:*:*:*:*:*:* (Version >= 7.30.0 and <= 7.51.0)
  • AND
  • cpe:/o:microsoft:windows_ce:-:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.artful:def:20169953000
    V
    		CVE-2016-9953 on Ubuntu 17.10 (artful) - medium.
    2018-03-12
    oval:com.ubuntu.trusty:def:20169953000
    V
    		CVE-2016-9953 on Ubuntu 14.04 LTS (trusty) - medium.
    2018-03-12
    oval:com.ubuntu.xenial:def:20169953000
    V
    		CVE-2016-9953 on Ubuntu 16.04 LTS (xenial) - medium.
    2018-03-12
    oval:com.ubuntu.xenial:def:201699530000000
    V
    		CVE-2016-9953 on Ubuntu 16.04 LTS (xenial) - medium.
    2018-03-12
    BACK
    haxx curl *
    microsoft windows ce -