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CVE Record

CVE-2018-1000099: Teluu PJSIP version 2.7.1 and earlier contains a Access of Null/Uninitialized Pointer vulnerability in pjme...

Teluu PJSIP version 2.7.1 and earlier contains a Access of Null/Uninitialized Pointer vulnerability in pjmedia SDP parsing that can result in Crash. This attack appear to be exploitable via Sending a specially crafted message. This vulnerability appears to have been fixed in 2.7.2.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This vulnerability can let a remote sender crash software that uses affected PJSIP SDP parsing. The public record identifies PJSIP 2.7.1 and earlier and says the issue was fixed in 2.7.2. The main business risk is denial of service for VoIP or SIP-enabled systems using vulnerable libraries.

Executive priority

Prioritize remediation for internet-facing or business-critical voice services. This is primarily a service availability risk, not a confirmed data theft or code execution issue based on the provided evidence.

Technical view

CVE-2018-1000099 is a null or uninitialized pointer access in pjmedia SDP parsing in Teluu PJSIP 2.7.1 and earlier. A specially crafted message can trigger a crash. Public data does not provide CVSS, CWE, or evidence of code execution.

Likely exposure

Exposure is most likely in SIP, VoIP, conferencing, PBX, softphone, or embedded products that bundle PJSIP or pjproject versions 2.7.1 or earlier and parse SDP from untrusted messages.

Exploitation context

The source bundle says exploitation appears possible by sending a specially crafted message. CISA KEV is false, and the provided sources do not show active exploitation or public weaponization evidence.

Researcher notes

The public CVE record is sparse: no CVSS, CWE, or detailed root-cause data is included. Treat the confirmed impact as crash denial of service unless vendor-specific evidence expands the scope.

Mitigation direction

  • Upgrade PJSIP or pjproject to version 2.7.2 or later.
  • Apply Debian DSA-4170 package updates where Debian packages are used.
  • Check vendor advisories for appliances or applications that bundle PJSIP.
  • Restrict SIP or SDP message exposure to trusted peers where operationally feasible.

Validation and detection

  • Inventory direct and bundled PJSIP or pjproject versions.
  • Confirm affected assets run 2.7.2 or a vendor-patched build.
  • Review dependency manifests, SBOMs, and appliance firmware notices.
  • Check service logs for unexplained crashes during SIP or SDP processing.
Prepared
Confidence
medium
Sources
6

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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CVE-2018-1000099 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

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.

0CVSS vectors
0Timeline events
0ADP providers
5Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

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