Vulnerability Name:

CVE-2017-11747 (CCN-129725)

Assigned:2017-07-29
Published:2017-07-29
Updated:2020-03-31
Summary:main.c in Tinyproxy 1.8.4 and earlier creates a /run/tinyproxy/tinyproxy.pid file after dropping privileges to a non-root account, which might allow local users to kill arbitrary processes by leveraging access to this non-root account for tinyproxy.pid modification before a root script executes a "kill `cat /run/tinyproxy/tinyproxy.pid`" command.
CVSS v3 Severity:5.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
4.9 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
7.8 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
6.9 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:2.1 Low (CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
6.8 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-269
Vulnerability Consequences:Gain Privileges
References:Source: MITRE
Type: CNA
CVE-2017-11747

Source: XF
Type: UNKNOWN
tinyprox-cve201711747-priv-esc(129725)

Source: CCN
Type: tinyproxy GIT Repository
tinyproxy should create its PID file before dropping privileges (CVE-2017-11747) #106

Source: MISC
Type: Issue Tracking, Patch, Third Party Advisory
https://github.com/tinyproxy/tinyproxy/issues/106

Source: MLIST
Type: UNKNOWN
[debian-lts-announce] 20200331 [SECURITY] [DLA 2163-1] tinyproxy security update

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2017-11747

Vulnerable Configuration:Configuration 1:
  • cpe:/a:tinyproxy_project:tinyproxy:*:*:*:*:*:*:*:* (Version <= 1.8.4)

    • Configuration CCN 1:
  • cpe:/a:tinyproxy_project:tinyproxy:1.8.4:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:113526
    P
    		tinyproxy-1.11.0-1.3 on GA media (Moderate)
    2022-01-17
    oval:org.opensuse.security:def:106922
    P
    		tinyproxy-1.11.0-1.3 on GA media (Moderate)
    2021-10-01
    oval:com.ubuntu.xenial:def:2017117470000000
    V
    		CVE-2017-11747 on Ubuntu 16.04 LTS (xenial) - medium.
    2017-07-30
    oval:com.ubuntu.artful:def:201711747000
    V
    		CVE-2017-11747 on Ubuntu 17.10 (artful) - medium.
    2017-07-30
    oval:com.ubuntu.xenial:def:201711747000
    V
    		CVE-2017-11747 on Ubuntu 16.04 LTS (xenial) - medium.
    2017-07-30
    oval:com.ubuntu.disco:def:2017117470000000
    V
    		CVE-2017-11747 on Ubuntu 19.04 (disco) - medium.
    2017-07-30
    oval:com.ubuntu.bionic:def:201711747000
    V
    		CVE-2017-11747 on Ubuntu 18.04 LTS (bionic) - medium.
    2017-07-30
    oval:com.ubuntu.cosmic:def:2017117470000000
    V
    		CVE-2017-11747 on Ubuntu 18.10 (cosmic) - medium.
    2017-07-30
    oval:com.ubuntu.cosmic:def:201711747000
    V
    		CVE-2017-11747 on Ubuntu 18.10 (cosmic) - medium.
    2017-07-30
    oval:com.ubuntu.bionic:def:2017117470000000
    V
    		CVE-2017-11747 on Ubuntu 18.04 LTS (bionic) - medium.
    2017-07-30
    oval:com.ubuntu.trusty:def:201711747000
    V
    		CVE-2017-11747 on Ubuntu 14.04 LTS (trusty) - medium.
    2017-07-30
    BACK
    tinyproxy_project tinyproxy *
    tinyproxy_project tinyproxy 1.8.4