Vulnerability Name:

CVE-2021-46142 (CCN-216876)

Assigned:2021-09-29
Published:2021-09-29
Updated:2022-02-05
Summary:An issue was discovered in uriparser before 0.9.6. It performs invalid free operations in uriNormalizeSyntax.
CVSS v3 Severity:5.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
4.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
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): High
3.3 Low (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)
2.9 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/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): Local
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:4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
1.7 Low (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-416
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2021-46142

Source: CONFIRM
Type: Third Party Advisory
https://blog.hartwork.org/posts/uriparser-096-with-security-fixes-released/

Source: XF
Type: UNKNOWN
uriparser-cve202146142-dos(216876)

Source: CCN
Type: uriparser GIT Repository
[CVE-2021-46142] uriNormalizeSyntax* may free stack memory in out-of-memory situation when handling URIs containing empty segments #122

Source: MISC
Type: Exploit, Issue Tracking, Patch, Third Party Advisory
https://github.com/uriparser/uriparser/issues/122

Source: MISC
Type: Exploit, Patch, Third Party Advisory
https://github.com/uriparser/uriparser/pull/124

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2022-00a529a8bf

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2022-cfd0048127

Source: DEBIAN
Type: Third Party Advisory
DSA-5063

Vulnerable Configuration:Configuration 1:
  • cpe:/a:uriparser_project:uriparser:*:*:*:*:*:*:*:* (Version < 0.9.6)

  • Configuration 2:
  • cpe:/a:fedoraproject:extra_packages_for_enterprise_linux:8.0:*:*:*:*:*:*:*
  • OR cpe:/o:fedoraproject:fedora:34:*:*:*:*:*:*:*
  • OR cpe:/o:fedoraproject:fedora:35:*:*:*:*:*:*:*

  • Configuration 3:
  • cpe:/o:debian:debian_linux:9.0:*:*:*:*:*:*:*
  • OR cpe:/o:debian:debian_linux:10.0:*:*:*:*:*:*:*
  • OR cpe:/o:debian:debian_linux:11.0:*:*:*:*:*:*:*

  • Configuration 4:
  • cpe:/a:opensuse:factory:-:*:*:*:*:*:*:*
  • OR cpe:/o:opensuse:backports:sle-15:*:*:*:*:*:*:*
  • OR cpe:/o:opensuse:leap:15.3:*:*:*:*:*:*:*

  • Configuration CCN 1:
  • cpe:/a:uriparser_project:uriparser:0.9.5:*:*:*:*:*:*:*

  • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:112893
    P
    liburiparser1-0.9.6-1.1 on GA media (Moderate)
    2022-01-17
    BACK
    uriparser_project uriparser *
    fedoraproject extra packages for enterprise linux 8.0
    fedoraproject fedora 34
    fedoraproject fedora 35
    debian debian linux 9.0
    debian debian linux 10.0
    debian debian linux 11.0
    opensuse factory -
    opensuse backports sle-15
    opensuse leap 15.3
    uriparser_project uriparser 0.9.5