CVE-2020-21677
MEDIUM
6.5
CVSS Score
Published: August 10, 2021 at 08:19 PM UTC
Updated: June 17, 2026 at 03:03 AM UTC
1 product affected across 1 vendorLibsixel
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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.9%
Description
A heap-based buffer overflow in the sixel_encoder_output_without_macro function in encoder.c of Libsixel 1.8.4 allows attackers to cause a denial of service (DOS) via converting a crafted PNG file into Sixel format.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
x_refsource_MISCExploitIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://github.com/saitoha/libsixel/issues/123CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- REQUIRED
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-787
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