Vulnerability Name:

CVE-2017-17521 (CCN-136384)

Assigned:2017-12-14
Published:2017-12-14
Updated:2020-01-13
Summary:uiutil.c in FontForge through 20170731 does not validate strings before launching the program specified by the BROWSER environment variable, which might allow remote attackers to conduct argument-injection attacks via a crafted URL, a different vulnerability than CVE-2017-17534.
CVSS v3 Severity:8.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
7.7 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
7.5 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N)
6.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:U/RC:R)
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): None
Integrity (I): High
Availibility (A): None
CVSS v2 Severity:6.8 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:C/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Complete
Availibility (A): None
Vulnerability Type:CWE-74
Vulnerability Consequences:Bypass Security
References:Source: MITRE
Type: CNA
CVE-2017-17521

Source: XF
Type: UNKNOWN
debian-cve201717521-sec-bypass(136384)

Source: CCN
Type: Debian Web site
CVE-2017-17521

Source: MISC
Type: Issue Tracking, Third Party Advisory
https://security-tracker.debian.org/tracker/CVE-2017-17521

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2017-17521

Vulnerable Configuration:Configuration 1:
  • cpe:/a:fontforge:fontforge:*:*:*:*:*:*:*:* (Version <= 20170731)

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.xenial:def:2017175210000000
    V
    		CVE-2017-17521 on Ubuntu 16.04 LTS (xenial) - low.
    2017-12-14
    oval:com.ubuntu.artful:def:201717521000
    V
    		CVE-2017-17521 on Ubuntu 17.10 (artful) - low.
    2017-12-14
    oval:com.ubuntu.xenial:def:201717521000
    V
    		CVE-2017-17521 on Ubuntu 16.04 LTS (xenial) - low.
    2017-12-14
    oval:com.ubuntu.disco:def:2017175210000000
    V
    		CVE-2017-17521 on Ubuntu 19.04 (disco) - low.
    2017-12-14
    oval:com.ubuntu.bionic:def:201717521000
    V
    		CVE-2017-17521 on Ubuntu 18.04 LTS (bionic) - low.
    2017-12-14
    oval:com.ubuntu.cosmic:def:2017175210000000
    V
    		CVE-2017-17521 on Ubuntu 18.10 (cosmic) - low.
    2017-12-14
    oval:com.ubuntu.cosmic:def:201717521000
    V
    		CVE-2017-17521 on Ubuntu 18.10 (cosmic) - low.
    2017-12-14
    oval:com.ubuntu.bionic:def:2017175210000000
    V
    		CVE-2017-17521 on Ubuntu 18.04 LTS (bionic) - low.
    2017-12-14
    oval:com.ubuntu.trusty:def:201717521000
    V
    		CVE-2017-17521 on Ubuntu 14.04 LTS (trusty) - low.
    2017-12-14
    BACK
    fontforge fontforge *