Vulnerability CVE-2020-28248
Published: 2021-02-20

Description:
An integer overflow in the PngImg::InitStorage_() function of png-img before 3.1.0 leads to an under-allocation of heap memory and subsequently an exploitable heap-based buffer overflow when loading a crafted PNG file.

Type:

CWE-190

 (Integer Overflow or Wraparound)

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

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.8/10
6.4/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Png-img project -> Png-img 

 References:
https://github.com/gemini-testing/png-img
https://github.com/gemini-testing/png-img/commit/14ac462a32ca4b3b78f56502ac976d5b0222ce3d
https://github.com/gemini-testing/png-img/compare/v3.0.0...v3.1.0
https://securitylab.github.com/advisories/GHSL-2020-142-gemini-png-img
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