Vulnerability Details : CVE-2019-1786
A vulnerability in the Portable Document Format (PDF) scanning functionality of Clam AntiVirus (ClamAV) Software versions 0.101.1 and 0.101.0 could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to a lack of proper data handling mechanisms within the device buffer while indexing remaining file data on an affected device. An attacker could exploit this vulnerability by sending crafted PDF files to an affected device. A successful 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.
Vulnerability category: Input validationDenial of service
Products affected by CVE-2019-1786
- cpe:2.3:a:clamav:clamav:0.101.0:*:*:*:*:*:*:*
- cpe:2.3:a:clamav:clamav:0.101.1:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-1786
0.29%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 69 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-1786
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:N/A:P |
8.6
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
Cisco Systems, Inc. | |
|
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST |
CWE ids for CVE-2019-1786
-
The 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.Assigned by: ykramarz@cisco.com (Secondary)
-
The product reads data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-1786
-
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=12149
12149 - clamav/clamav_scanfile_PDF_fuzzer: Crash in pdf_nextobject - oss-fuzz - MonorailIssue Tracking;Mailing List;Third Party Advisory
-
https://security.gentoo.org/glsa/201904-12
ClamAV: Multiple vulnerabilities (GLSA 201904-12) — Gentoo securityThird Party Advisory
-
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=12168
12168 - clamav/clamav_scanfile_PDF_fuzzer: Heap-buffer-overflow in pdf_parseobj - oss-fuzz - MonorailIssue Tracking;Mailing List;Third Party Advisory
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