Vulnerability Name:

CVE-2019-25035 (CCN-200870)

Assigned:2019-12-11
Published:2019-12-11
Updated:2021-12-03
Summary:** DISPUTED ** Unbound before 1.9.5 allows an out-of-bounds write in sldns_bget_token_par.
Note: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound installation cannot be remotely or locally exploited.
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
9.8 Critical (REDHAT 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 (REDHAT 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-2019-25035

Source: XF
Type: UNKNOWN
unbound-cve201925035-code-exec(200870)

Source: MLIST
Type: Mailing List, Third Party Advisory
[debian-lts-announce] 20210506 [SECURITY] [DLA 2652-1] unbound1.9 security update

Source: CCN
Type: Unbound Web site
Unbound

Source: CCN
Type: OSTIF Web site
Unbound DNS

Source: MISC
Type: Not Applicable, Third Party Advisory
https://ostif.org/our-audit-of-unbound-dns-by-x41-d-sec-full-results/

Source: CONFIRM
Type: Third Party Advisory
https://security.netapp.com/advisory/ntap-20210507-0007/

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2019-25035

Vulnerable Configuration:Configuration 1:
  • cpe:/a:nlnetlabs:unbound:*:*:*:*:*:*:*:* (Version < 1.9.5)

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

    • Configuration RedHat 1:
  • cpe:/a:redhat:enterprise_linux:8:*:*:*:*:*:*:*

    • Configuration RedHat 2:
  • cpe:/a:redhat:enterprise_linux:8::appstream:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:nlnetlabs:unbound:1.9.4:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:7688
    P
    		libunbound2-1.6.8-150100.10.8.1 on GA media (Moderate)
    2023-06-12
    oval:org.opensuse.security:def:3096
    P
    		gtk2-data-2.24.31-9.6.28 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:94726
    P
    		libunbound2-1.6.8-10.6.1 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:119096
    P
    		Security update for unbound (Important)
    2022-02-15
    oval:org.opensuse.security:def:119210
    P
    		Security update for unbound (Important)
    2022-01-25
    oval:org.opensuse.security:def:101606
    P
    		Security update for unbound (Important)
    2022-01-25
    oval:org.opensuse.security:def:118713
    P
    		Security update for unbound (Important)
    2022-01-25
    oval:org.opensuse.security:def:119400
    P
    		Security update for unbound (Important)
    2022-01-25
    oval:org.opensuse.security:def:894
    P
    		Security update for unbound (Important)
    2022-01-25
    oval:org.opensuse.security:def:118903
    P
    		Security update for unbound (Important)
    2022-01-25
    oval:org.opensuse.security:def:119585
    P
    		Security update for unbound (Important)
    2022-01-25
    oval:com.redhat.rhsa:def:20211853
    P
    		RHSA-2021:1853: unbound security, bug fix, and enhancement update (Moderate)
    2021-05-18
    BACK
    nlnetlabs unbound *
    debian debian linux 9.0
    nlnetlabs unbound 1.9.4