Remote memory disclosure via uninitialized HEVC buffers
Published Jun 11, 2020 · Updated Aug 4, 2024
Information disclosure in Android 10's HEVC media decoder allows remote attackers to read uninitialized memory through crafted media. The ihevcd_iquant_itrans_recon_ctb path and SSE intra-prediction routines use stack byte arrays without zero-initializing them before reconstruction reads their contents. Exploitation requires a user to process attacker-supplied media; the disclosed consequence is memory disclosure without code execution or data modification.
Summary
What happened
Information disclosure in Android 10's HEVC media decoder allows remote attackers to read uninitialized memory through crafted media. The ihevcd_iquant_itrans_recon_ctb path and SSE intra-prediction routines use stack byte arrays without zero-initializing them before reconstruction reads their contents. Exploitation requires a user to process attacker-supplied media; the disclosed consequence is memory disclosure without code execution or data modification.
The record
- CVE
- CVE-2020-0195
- Published
- Jun 11, 2020
- Updated
- Aug 4, 2024
- Vendor
- Google Cloud
- Product
- Android
- Classifications
- Unavailable
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 11, 2020CVE publishedPublication date reported by the CVE source.
- Aug 4, 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?
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- Affected versionversion=Android-10
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
CVSS describes severity. EPSS estimates exploitation probability.
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.
Weakness, pattern, technique
No sourced classifications are available.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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