Current Description
An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. Compiling a crafted source file leads to an 8 byte out of bounds write in the asm_parse_directive function in tccasm.c.
Source:
MITRE
Description Last Modified:
12/23/2018
View Analysis Description
Analysis Description
An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. Compiling a crafted source file leads to an 8 byte out of bounds write in the asm_parse_directive function in tccasm.c.
Source:
MITRE
Description Last Modified:
12/23/2018
Impact
CVSS v3.0 Severity and Metrics:
Base Score:
5.5 MEDIUM
Vector:
AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
(V3 legend)
Impact Score:
3.6
Exploitability Score:
1.8
Attack Vector (AV):
Local
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
Required
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
High
CVSS v2.0 Severity and Metrics:
Base Score:
4.3 MEDIUM
Vector:
(AV:N/AC:M/Au:N/C:N/I:N/A:P)
(V2 legend)
Impact Subscore:
2.9
Exploitability Subscore:
8.6
Access Vector (AV):
Network
Access Complexity (AC):
Medium
Authentication (AU):
None
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
Partial
Additional Information:
Victim must voluntarily interact with attack mechanism
Allows disruption of service
References to Advisories, Solutions, and Tools
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Change History
1 change record found
- show changes
Initial Analysis -
1/6/2019 12:42:21 PM
| Action |
Type |
Old Value |
New Value |
| Added |
CPE Configuration |
|
OR
*cpe:2.3:a:tinycc:tinycc:0.9.27:*:*:*:*:*:*:* |
| Added |
CVSS V2 |
|
(AV:N/AC:M/Au:N/C:N/I:N/A:P) |
| Added |
CVSS V2 Metadata |
|
Victim must voluntarily interact with attack mechanism |
| Added |
CVSS V3 |
|
AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
| Added |
CWE |
|
CWE-787 |
| Changed |
Reference Type |
https://lists.nongnu.org/archive/html/tinycc-devel/2018-12/msg00013.html No Types Assigned |
https://lists.nongnu.org/archive/html/tinycc-devel/2018-12/msg00013.html Exploit, Mailing List, Third Party Advisory |