Vulnerability Name:

CVE-2017-17846 (CCN-136690)

Assigned:2017-12-22
Published:2017-12-22
Updated:2018-02-04
Summary:An issue was discovered in Enigmail before 1.9.9. Regular expressions are exploitable for Denial of Service, because of attempts to match arbitrarily long strings, aka TBE-01-003.
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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): None
Integrity (I): None
Availibility (A): High
4.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)
3.8 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/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): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Low
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
4.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-20
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2017-17846

Source: MISC
Type: Third Party Advisory, Vendor Advisory
https://enigmail.net/download/other/Enigmail%20Pentest%20Report%20by%20Cure53%20-%20Excerpt.pdf

Source: XF
Type: UNKNOWN
enigmail-cve201717846-dos(136690)

Source: MLIST
Type: UNKNOWN
[debian-lts-announce] 20171223 [SECURITY] [DLA 1219-1] enigmail security update

Source: MISC
Type: Third Party Advisory
https://lists.debian.org/debian-security-announce/2017/msg00333.html

Source: CCN
Type: Debian Security Advisory: DSA-4070-1
enigmail -- security update

Source: DEBIAN
Type: Third Party Advisory
DSA-4070

Source: CCN
Type: Enigmail Web site
A simple interface for OpenPGP email security

Source: MISC
Type: Mailing List, Third Party Advisory
https://www.mail-archive.com/enigmail-users@enigmail.net/msg04280.html

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2017-17846

Vulnerable Configuration:Configuration 1:
  • cpe:/a:enigmail:enigmail:*:*:*:*:*:*:*:* (Version < 1.9.9)

    • Configuration 2:
  • cpe:/o:debian:debian_linux:8.0:*:*:*:*:*:*:*
  • OR cpe:/o:debian:debian_linux:9.0:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:enigmail:enigmail:1.9.8:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.artful:def:201717846000
    V
    		CVE-2017-17846 on Ubuntu 17.10 (artful) - low.
    2017-12-27
    oval:com.ubuntu.trusty:def:201717846000
    V
    		CVE-2017-17846 on Ubuntu 14.04 LTS (trusty) - low.
    2017-12-27
    oval:com.ubuntu.xenial:def:201717846000
    V
    		CVE-2017-17846 on Ubuntu 16.04 LTS (xenial) - low.
    2017-12-27
    oval:com.ubuntu.xenial:def:2017178460000000
    V
    		CVE-2017-17846 on Ubuntu 16.04 LTS (xenial) - low.
    2017-12-27
    BACK
    enigmail enigmail *
    debian debian linux 8.0
    debian debian linux 9.0
    enigmail enigmail 1.9.8