Application crash via RLE row heap overflow
Published Feb 12, 2020 · Updated Aug 6, 2024
Heap buffer overflow in NetSurf Libnsbmp 0.1.2 allows context-dependent attackers to crash a host application via a crafted RLE BMP file. The bmp_decode_rle function overcounts pixels remaining in the final row, permitting decoded pixels to be written beyond the callback-allocated bitmap buffer. A consuming application must decode the malicious image; the resulting out-of-bounds write can corrupt heap memory and enable code execution.
Summary
What happened
Heap buffer overflow in NetSurf Libnsbmp 0.1.2 allows context-dependent attackers to crash a host application via a crafted RLE BMP file. The bmp_decode_rle function overcounts pixels remaining in the final row, permitting decoded pixels to be written beyond the callback-allocated bitmap buffer. A consuming application must decode the malicious image; the resulting out-of-bounds write can corrupt heap memory and enable code execution.
The record
- CVE
- CVE-2015-7508
- Published
- Feb 12, 2020
- Updated
- Aug 6, 2024
- Vendor
- NetSurf
- Product
- Libnsbmp
- Classifications
- CWE-787, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 12, 2020CVE publishedPublication date reported by the CVE source.
- Aug 6, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0.1.2
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
- Libnsbmp RLE heap-overflow proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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