LiveActive security incident?Get immediate response
CVE Record

CVE-2019-1010177: Jsish 2.4.70 2.047 is affected by: Use After Free.

Jsish 2.4.70 2.047 is affected by: Use After Free. The impact is: denial of service and possibly arbitrary code execution. The component is: function Jsi_RegExpNew (jsi/jsiRegexp.c:39). The attack vector is: executing crafted javascript code. The fixed version is: after commit 48a66c798d.

UnknownCVSS not scoredNot KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

Jsish/Jsi 2.4.70/2.047 has a memory safety flaw triggered by crafted JavaScript. The reported impact is denial of service and possible arbitrary code execution. Business urgency depends on whether Jsi is present and whether it processes untrusted scripts.

Executive priority

Prioritize confirmation over emergency response. If Jsi processes untrusted JavaScript in production, treat patching as important because the reported impact includes service disruption and possible code execution. If Jsi is absent or only used offline with trusted scripts, business urgency is lower.

Technical view

CVE-2019-1010177 is a use-after-free in Jsi_RegExpNew in jsi/jsiRegexp.c around line 39. The source describes the vector as executing crafted JavaScript code and lists the fix as after commit 48a66c798d. No CVSS, CWE, or detailed exploit evidence is provided.

Likely exposure

Likely limited to systems that embed or run Jsish/Jsi 2.4.70/2.047 and accept or process JavaScript content. Exposure is higher where untrusted users can submit scripts or data reaching Jsi regular expression creation. The sources do not identify downstream products or package distributions.

Exploitation context

The bundle does not show CISA KEV listing or other evidence of active exploitation. Public details say crafted JavaScript can trigger the issue, but they do not provide reliable information about exploit maturity, prerequisites, or real-world targeting.

Researcher notes

Evidence is sparse: one confirmed vendor ticket, CVE metadata, no CVSS, and no KEV signal. The useful anchors are the affected component, crafted JavaScript vector, possible DoS/code execution impact, and fixed-after commit reference. Avoid extrapolating to unrelated JavaScript engines.

Mitigation direction

  • Upgrade Jsish/Jsi to a build after commit 48a66c798d.
  • Check Jsish vendor guidance for the exact patched release or supported replacement.
  • Restrict execution of untrusted JavaScript in Jsi until patched.
  • Reduce exposure of services that process user-controlled scripts.

Validation and detection

  • Inventory systems and applications for embedded Jsish/Jsi usage.
  • Confirm whether any installation reports version 2.4.70 or 2.047.
  • Verify the deployed code includes changes after commit 48a66c798d.
  • Review application paths where users can influence JavaScript executed by Jsi.
Prepared
Confidence
medium
Sources
3

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

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.

description · low confidence lookup

Execution behavior lookup

The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2019-1010177 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
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
2Source 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
JsishJsi2.4.70 2.047 [fixed: after commit 48a66c798d]Listed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.