CVE-2019-1798: cisco clamav Improper Input Validation
Vulnerability summary
CVE-2019-1798 is a high (CVSS 7.5) Improper Input Validation vulnerability in cisco clamav. EPSS estimates a 1.10% chance of exploitation in the next 30 days, higher than 65.2% of scored vulnerabilities. 1 public exploit is recorded.
Advisory lineage
Upstream 0 · Downstream 4 · Related 4Timeline
- 08-04-2019PublishedVulnerability first disclosed.
- 19-11-2024Last modifiedVulnerability information updated.
Description
A vulnerability in the Portable Executable (PE) file scanning functionality of Clam AntiVirus (ClamAV) Software versions 0.101.1 and prior could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to a lack of proper input and validation checking mechanisms for PE files sent an affected device. An attacker could exploit this vulnerability by sending malformed PE files to the device running an affected version ClamAV Software. An exploit could allow the attacker to cause an out-of-bounds read condition, resulting in a crash that could result in a denial of service condition on an affected device.
CVSS metrics
7 scores · 4 sources · 3 versions- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- NVDNIST5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HDiffers
- NVDNIST7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
1.10%
Chance of exploitation in the next 30 days
Percentile
65%
Versus all other CVEs
30-day change
0.00 pp
From 1.10% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (bugzilla.clamav.net)
Maturity: unknown
Weaknesses
CWE · root cause- CWE-20Improper Input ValidationThe product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
- CWE-125Out-of-bounds ReadThe product reads data past the end, or before the beginning, of the intended buffer.
Affected systems
Debian2 products
- clamav< 0.101.2+dfsg-1
- libclamunrar< 0.101.2-1
Ubuntu2 products
- clamav< 0.100.2+dfsg-1ubuntu0.14.04.2 | < 0.100.2+dfsg-1ubuntu0.16.04.1 | < 0.100.2+dfsg-1ubuntu0.18.04.1
- libclamunrar< 0.100.1-1~ubuntu0.14.04.1 | < 0.100.1-1~ubuntu0.16.04.1 | < 0.100.1-1~ubuntu0.18.04.1
Cisco1 product
- clamav≥ unspecified, ≤ 0.101.1
Clamav1 product
- clamav≤ 0.101.1
4 vendors · 6 products
