Vulnerability Name:

CVE-2019-13455 (CCN-166019)

Assigned:2019-07-23
Published:2019-07-23
Updated:2020-08-24
Summary:In Xymon through 4.3.28, a stack-based buffer overflow vulnerability exists in the alert acknowledgment CGI tool because of   expansion in acknowledge.c.
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
9.8 Critical (CCN 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 (CCN 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
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
10.0 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-787
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2019-13455

Source: XF
Type: UNKNOWN
xymon-cve201913455-bo(166019)

Source: MISC
Type: Third Party Advisory
https://github.com/svn2github/xymon/blob/master/branches/4.3.28/web/acknowledge.c

Source: CONFIRM
Type: Mailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/08/msg00032.html

Source: CCN
Type: Xymon Web site
[Xymon] Xymon 4.3.29 Released - Important Security Update

Source: CONFIRM
Type: Exploit, Mailing List, Vendor Advisory
https://lists.xymon.com/archive/2019-July/046570.html

Vulnerable Configuration:Configuration 1:
  • cpe:/a:xymon:xymon:*:*:*:*:*:*:*:* (Version <= 4.3.28)

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

    • Configuration CCN 1:
  • cpe:/a:xymon:xymon:4.3.28:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.bionic:def:2019134550000000
    V
    		CVE-2019-13455 on Ubuntu 18.04 LTS (bionic) - medium.
    2019-08-27
    oval:com.ubuntu.xenial:def:2019134550000000
    V
    		CVE-2019-13455 on Ubuntu 16.04 LTS (xenial) - medium.
    2019-08-27
    oval:com.ubuntu.disco:def:2019134550000000
    V
    		CVE-2019-13455 on Ubuntu 19.04 (disco) - untriaged.
    2019-08-27
    BACK
    xymon xymon *
    debian debian linux 8.0
    xymon xymon 4.3.28