Security readout for executives and security teams
Plain-English summary
CVE-2017-13320 is an Android media-decoder flaw that can let a malicious media input crash affected devices or processes. The documented impact is denial of service, not data theft or code execution. Exploitation requires user interaction, which lowers urgency but still matters for fleets with older Android devices.
Executive priority
Treat this as a moderate mobile fleet hygiene issue. Prioritize remediation for unmanaged, customer-facing, or high-volume media-processing devices, but it does not indicate confirmed active exploitation or code execution from the provided evidence.
Technical view
The issue is a CWE-125 out-of-bounds read in impeg2d_bit_stream_flush() in libmpeg2dec, caused by a missing bounds check. The CVSS 3.1 score is 6.5: network-reachable, low complexity, no privileges required, user interaction required, and high availability impact only.
Likely exposure
Exposure is limited to Android versions 7, 7.1.1, 7.1.2, 8, and 8.1 as listed in the CVE bundle. Organizations are mainly exposed through legacy or unmanaged Android devices that still process untrusted media content.
Exploitation context
The source bundle does not show CISA KEV listing or other evidence of active exploitation. Public sources describe a remote denial-of-service condition requiring user interaction, but do not provide exploit-in-the-wild evidence.
Researcher notes
Evidence is limited to the CVE record, CVE List data, and Android Pixel bulletin reference. The bundle does not include a patch diff, proof of concept, crash details, or active exploitation reporting, so validation should focus on version and patch-state exposure.
Mitigation direction
- Check Android and Pixel May 2018 security bulletin guidance for applicable updates.
- Apply vendor security updates to affected Android 7.x and 8.x devices.
- Retire or isolate unsupported devices that cannot receive relevant vendor fixes.
- Limit exposure to untrusted media on legacy affected devices where practical.
Validation and detection
- Inventory Android devices for versions 7, 7.1.1, 7.1.2, 8, and 8.1.
- Verify affected devices received the applicable vendor security bulletin update.
- Identify apps or workflows that process untrusted media on affected devices.
- Confirm unsupported legacy devices are removed, isolated, or risk-accepted.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-125: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2017-13320 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H2.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://source.android.com/docs/security/bulletin/pixel/2018-05-01CVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Out-of-bounds Read
Out-of-bounds Read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.