Vulnerability CVE-2020-23856
Published: 2021-05-18

Description:
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.

Type:

CWE-416

 (Use After Free)

CVSS2 => (AV:L/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
2.1/10
2.9/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
GNU -> Cflow 

 References:
https://lists.gnu.org/archive/html/bug-cflow/2020-07/msg00000.html
https://github.com/yangjiageng/PoC/blob/master/PoC_cflow_uaf_parser_line1284
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