Vulnerability details
CVE-2024-7227
Avast Free Antivirus
Avast Free Antivirus AvastSvc Link Following Local Privilege Escalation Vulnerability
CVSS 3.0
7.8High
Official description
Avast Free Antivirus AvastSvc Link Following Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of Avast Free Antivirus. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the Avast Service. By creating a symbolic link, an attacker can abuse the service to delete a file. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-22272.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.8High | 3.0 | CVEProject cvelistV5 (CNA) (zdi) | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Avast | Free Antivirus | 23.9.6082 | CVEProject cvelistV5 (CNA) |
| Avast | Free Antivirus | 23.9.6082 | CISA ADP / Vulnrichment |
References and advisories
1- https://www.zerodayinitiative.com/advisories/ZDI-24-1003/ x_research-advisory
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Details
- Published
- 2024-11-23
- Last updated
- 2024-11-25
- State
- Published
- Assigner (CNA)
- zdi
Exploit prediction (EPSS)
0.35%
Probability of exploitation in 30 days
28.9%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-59Improper Link Resolution Before File Access ('Link Following')