CVE-2019-12495

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Published May 31, 2019 CVSS 3.0 · 5.5 Medium EPSS 1.2% KEV · Not listed

Description

An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. Compiling a crafted source file leads to a one-byte out-of-bounds write in the gsym_addr function in x86_64-gen.c. This occurs because tccasm.c mishandles section switches.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

cpe:2.3:a:tinycc:tinycc:0.9.27:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2019-4091	An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. Compiling a crafted source file leads to a one-byte out-of-bounds write in the gsym_addr function in x86_64-gen.c. This occurs because tccasm.c mishandles section switches.

Metrics

No CVSS v4.0

No CVSS v3.1

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction Required

Access Vector Network

Access Complexity Medium

Authentication None

Confidentiality Impact None

Integrity Impact None

Availability Impact Partial

This CVE is not in the KEV list.

Exploit prediction score: 1.2% (1.218% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
http://www.securityfocus.com/bid/108541
https://lists.nongnu.org/archive/html/tinycc-devel/2019-05/msg00044.html
https://repo.or.cz/tinycc.git/commit/d04ce7772c2bc2781ab2502e0b1f1964488814b5

History

No history.

Subscriptions

Tinycc Tinycc

Weaknesses

CWE-787

Sources

CVE record Updated: Aug 4, 2024, 11:24 PM

Status: PUBLISHED
Assigner: mitre
Published: May 31, 2019, 10:45 AM
Updated: Aug 4, 2024, 11:24 PM
Reserved: May 31, 2019, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 2:14 AM

Status: Modified
Published: May 31, 2019, 11:29 AM
Modified: Jun 17, 2026, 2:14 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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