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Git for Visual Studio Remote Code Execution Vulnerability

IdentifiersCVE-2019-1354CWE-20· Improper Input Validation

CVE-2019-1354 is a remote code execution vulnerability in Git for Visual Studio caused by improper sanitization of attacker-controlled input. The provided content identifies it as part of the December 2019 set of Critical Git for Visual Studio flaws and explicitly states that the issue exists when Git for Visual Studio improperly sanitizes input. The available context does not provide the exact vulnerable function or parsing routine for this specific CVE, but it does establish that malicious repository content or related crafted input can trigger code execution.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation can result in remote code execution on the affected system. Based on the provided Microsoft description, an attacker can cause arbitrary code to run in the context of the targeted user through improperly sanitized input processed by Git for Visual Studio.

Mitigation

If you can’t patch tonight, do this now.

Until patches are applied, reduce exposure by avoiding interaction with untrusted repositories or other untrusted Git content in Git for Visual Studio, and limit use of affected tooling in environments where attacker-controlled repository data may be processed. Standard hardening such as least-privilege user contexts also reduces impact, but the primary mitigation is patching.

Remediation

Patch, then assume compromise.

Apply the Microsoft December 2019 security updates that address CVE-2019-1354 in Git for Visual Studio. The supporting content identifies this CVE as fixed by Microsoft as part of Patch Tuesday on 2019-12-11.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
Microsoft CorporationVisual Studio 2017application
Microsoft CorporationVisual Studio 2019application

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.
Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity

Community discussion across Reddit, Mastodon, and other social sources.