Security readout for executives and security teams
Plain-English summary
This is a local privilege-related flaw in Cisco AMP for Endpoints and ClamAV. A user who already has shell access could trigger a scan race condition and make the security software delete files they normally could not remove. Business impact is endpoint instability and possible loss of antivirus protection, not remote takeover based on the supplied sources.
Executive priority
Treat as a moderate-priority hygiene fix. It is not described as remotely exploitable or actively exploited, but it can undermine endpoint protection after local compromise. Patch during normal security maintenance, with faster handling on shared systems or environments with broad shell access.
Technical view
CVE-2020-3350 is a CWE-362 race condition during scanning of malicious files. With local low-privileged access, an attacker can cause arbitrary file deletion. CVSS 3.1 is 5.5: local access, low privileges, no user interaction, unchanged scope, high integrity impact, no confidentiality or availability score impact.
Likely exposure
Exposure is most likely on endpoints or servers running affected Cisco AMP for Endpoints or ClamAV packages covered by Cisco and Linux distribution advisories. The source bundle does not provide exact affected version ranges, so teams should verify installed versions against vendor guidance.
Exploitation context
The supplied sources describe local authenticated exploitation requiring shell access. CISA KEV status is false, and the bundle provides no evidence of active exploitation. The likely attacker profile is an insider or a threat actor who has already gained local execution on a system.
Researcher notes
Key constraints are local access and race-condition timing during file scanning. The supplied record does not include exact fixed versions, proof-of-concept status, or exploit telemetry. Avoid assuming remote exploitability or full privilege escalation beyond arbitrary deletion by the running software.
Mitigation direction
- Check Cisco, Ubuntu, Gentoo, Fedora, and Debian advisories for fixed package guidance.
- Update Cisco AMP for Endpoints or ClamAV where vendor guidance marks versions affected.
- Prioritize systems where untrusted users have local shell access.
- Restrict unnecessary local shell access on systems running affected endpoint protection.
- Monitor vendor advisories for any revised affected-version or workaround details.
Validation and detection
- Inventory systems running Cisco AMP for Endpoints and ClamAV.
- Compare installed product and package versions with the cited vendor advisories.
- Confirm security updates from relevant OS vendors are installed.
- Review endpoint logs for unusual file deletion or antivirus service failures.
- Validate that antivirus services remain running after updates.
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.
CWE-362: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2020-3350 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
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 vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N1.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Source materials
- CVE List V5 sourceCVE List V5
- 20200617 Cisco AMP for Endpoints and ClamAV Privilege Escalation VulnerabilityCVE reference · vendor-advisory, x_refsource_CISCO
- GLSA-202007-23CVE reference · vendor-advisory, x_refsource_GENTOO
- USN-4435-1CVE reference · vendor-advisory, x_refsource_UBUNTU
- FEDORA-2020-dd0c20d985CVE reference · vendor-advisory, x_refsource_FEDORA
- USN-4435-2CVE reference · vendor-advisory, x_refsource_UBUNTU
- FEDORA-2020-6584a641aeCVE reference · vendor-advisory, x_refsource_FEDORA
- [debian-lts-announce] 20200806 [SECURITY] [DLA 2314-1] clamav security updateCVE reference · mailing-list, x_refsource_MLIST
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.
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.