Security readout for executives and security teams
Plain-English summary
CVE-2018-19517 is a memory-safety issue in sysstat 12.1.1. A sysstat component can read outside expected memory while handling data through sadf. The public record does not provide a severity score, business impact rating, or confirmed exploitation evidence.
Executive priority
Treat this as a targeted hygiene item unless your environment relies heavily on sysstat 12.1.1 or processes untrusted activity data. The lack of severity, KEV listing, and documented impact limits urgency, but affected systems should still be identified and updated per vendor guidance.
Technical view
The CVE describes an out-of-bounds read in remap_struct in sa_common.c during a memset call, demonstrated through sadf. The supplied affected-product metadata is incomplete, but the description specifically names sysstat 12.1.1. No CWE, CVSS, patch details, or exploit-in-the-wild evidence are provided.
Likely exposure
Exposure is most likely on systems with sysstat 12.1.1 installed, particularly where sadf processes system activity data. The source bundle does not identify affected distributions, package builds, or version ranges beyond sysstat 12.1.1.
Exploitation context
The source bundle cites a public GitHub issue and marks the CVE as not in KEV. There is no supplied evidence of active exploitation. The demonstrated context is sadf triggering the out-of-bounds read, but operational exploitability and impact are not documented.
Researcher notes
The public evidence is sparse. Key unknowns include exact affected version range, whether the issue causes only a crash or broader memory disclosure, and whether downstream distributions patched it. Avoid assuming exploitability beyond the sadf demonstration noted in the CVE description.
Mitigation direction
- Inventory systems running sysstat, prioritizing version 12.1.1.
- Check sysstat and OS vendor guidance for fixed packages or workarounds.
- Avoid processing untrusted system activity data with sadf until guidance is confirmed.
- Track distribution security advisories for sysstat package updates.
Validation and detection
- Confirm installed sysstat versions across Linux and Unix-like hosts.
- Identify systems or jobs that run sadf against collected activity files.
- Review vendor package changelogs for CVE-2018-19517 references.
- Document whether affected hosts process only trusted local data.
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.
CVE-2018-19517 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/sysstat/sysstat/issues/199CVE reference · x_refsource_MISC
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.