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CVE Record

CVE-2020-21572: Buffer overflow vulnerability in function src_parser_trans_stage_1_2_3 trgil gilcc before commit 803969389c...

Buffer overflow vulnerability in function src_parser_trans_stage_1_2_3 trgil gilcc before commit 803969389ca9c06237075a7f8eeb1a19e6651759, allows attackers to cause a denial of service.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2020-21572 is a reported buffer overflow in trgil/gilcc that can crash the process, causing denial of service. The public record does not provide CVSS, affected release numbers, or CPE data, so urgency depends on whether your environment builds or runs gilcc on untrusted input.

Executive priority

Prioritize this if gilcc is used in automated workflows or accepts untrusted input. Otherwise, treat it as a targeted inventory and hygiene item because public impact is limited to denial of service and evidence is sparse.

Technical view

The flaw is described in src_parser_trans_stage_1_2_3 in gilcc before commit 803969389ca9c06237075a7f8eeb1a19e6651759. Public sources characterize the impact as denial of service. No source in the bundle confirms code execution, privilege escalation, affected versions, or a packaged release fix.

Likely exposure

Exposure is likely limited to systems that use trgil/gilcc, especially where it parses externally supplied or untrusted source content. The CVE metadata lists vendor, product, versions, and CPEs as unavailable, so automated asset matching may miss it.

Exploitation context

The CVE is not listed in KEV, and the provided sources do not claim active exploitation. The GitHub issue and fix commit indicate a crash-oriented parser vulnerability, but the bundle does not establish weaponized exploitation or real-world targeting.

Researcher notes

The source bundle is thin: no CVSS, CWE, CPE, package release, or affected version range beyond “before commit.” Analysis should remain anchored to the GitHub issue, the named commit, and the CVE denial-of-service description.

Mitigation direction

  • Inventory whether trgil/gilcc is used in builds, tooling, or services.
  • If used from source, update to commit 803969389ca9c06237075a7f8eeb1a19e6651759 or later.
  • Avoid processing untrusted gilcc inputs until the fixed code is in place.
  • Check the upstream repository for release guidance or maintained branches.
  • Document any compensating controls around build and parser input sources.

Validation and detection

  • Confirm whether gilcc exists in source repositories, build images, or developer tooling.
  • Verify the deployed source includes commit 803969389ca9c06237075a7f8eeb1a19e6651759 or newer.
  • Review workflows for paths where gilcc receives external or user-controlled input.
  • Confirm crash handling and isolation for parser failures in non-production testing.
  • Record that CVSS, CPE, and version metadata are missing from public CVE data.
Prepared
Confidence
medium
Sources
4

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

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CVE-2020-21572 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
3Source 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

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