CVE-2020-23856

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2020-23856
Use-after-Free vulnerability in cflow 1.6 in the void call(char *name, int line) function at src/parser.c, which could cause a denial of service via the pointer variable caller->callee.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

2.1 /10

CVSS v2.0 : LOW

V2 Legend

Vector : AV:L/AC:L/Au:N/C:N/I:N/A:P

Exploitability : 3.9 / Impact : 2.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References
Link Resource
https://github.com/yangjiageng/PoC/blob/master/PoC_cflow_uaf_parser_line1284 Exploit Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BLSXGFK2NYPCJMPHSHE3W56ZU3ZO6RD7/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FZTTKZX274BVFZX7TMPEZG6UWL6UPMQF/
https://lists.gnu.org/archive/html/bug-cflow/2020-07/msg00000.html Exploit Mailing List Vendor Advisory
https://github.com/yangjiageng/PoC/blob/master/PoC_cflow_uaf_parser_line1284 Exploit Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BLSXGFK2NYPCJMPHSHE3W56ZU3ZO6RD7/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FZTTKZX274BVFZX7TMPEZG6UWL6UPMQF/
https://lists.gnu.org/archive/html/bug-cflow/2020-07/msg00000.html Exploit Mailing List Vendor Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:gnu:cflow:1.6:*:*:*:*:*:*:*

Configuration 2 (hide)

OR cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
History

21 Nov 2024, 05:14

Type Values Removed Values Added
References () https://github.com/yangjiageng/PoC/blob/master/PoC_cflow_uaf_parser_line1284 - Exploit, Third Party Advisory () https://github.com/yangjiageng/PoC/blob/master/PoC_cflow_uaf_parser_line1284 - Exploit, Third Party Advisory
References () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BLSXGFK2NYPCJMPHSHE3W56ZU3ZO6RD7/ - () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BLSXGFK2NYPCJMPHSHE3W56ZU3ZO6RD7/ -
References () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FZTTKZX274BVFZX7TMPEZG6UWL6UPMQF/ - () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FZTTKZX274BVFZX7TMPEZG6UWL6UPMQF/ -
References () https://lists.gnu.org/archive/html/bug-cflow/2020-07/msg00000.html - Exploit, Mailing List, Vendor Advisory () https://lists.gnu.org/archive/html/bug-cflow/2020-07/msg00000.html - Exploit, Mailing List, Vendor Advisory

01 Jan 2022, 17:52

Type Values Removed Values Added
CPE cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
References (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BLSXGFK2NYPCJMPHSHE3W56ZU3ZO6RD7/ - (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BLSXGFK2NYPCJMPHSHE3W56ZU3ZO6RD7/ - Mailing List, Third Party Advisory
References (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FZTTKZX274BVFZX7TMPEZG6UWL6UPMQF/ - (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FZTTKZX274BVFZX7TMPEZG6UWL6UPMQF/ - Mailing List, Third Party Advisory

01 Jun 2021, 06:15

Type Values Removed Values Added
References
  • (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FZTTKZX274BVFZX7TMPEZG6UWL6UPMQF/ -
  • (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BLSXGFK2NYPCJMPHSHE3W56ZU3ZO6RD7/ -

24 May 2021, 19:53

Type Values Removed Values Added
References (MISC) https://lists.gnu.org/archive/html/bug-cflow/2020-07/msg00000.html - (MISC) https://lists.gnu.org/archive/html/bug-cflow/2020-07/msg00000.html - Exploit, Mailing List, Vendor Advisory
References (MISC) https://github.com/yangjiageng/PoC/blob/master/PoC_cflow_uaf_parser_line1284 - (MISC) https://github.com/yangjiageng/PoC/blob/master/PoC_cflow_uaf_parser_line1284 - Exploit, Third Party Advisory
CWE CWE-416
CPE cpe:2.3:a:gnu:cflow:1.6:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : 2.1
v3 : 5.5
Information

Published : 2021-05-18 15:15

Updated : 2024-11-21 05:14

NVD link : CVE-2020-23856

Mitre link : CVE-2020-23856

CVE.ORG link : CVE-2020-23856

JSON object : View

Products Affected

gnu

  • cflow

fedoraproject

  • fedora
CWE
CWE-416

Use After Free