Vulnerability Details : CVE-2019-19481
An issue was discovered in OpenSC through 0.19.0 and 0.20.x through 0.20.0-rc3. libopensc/card-cac1.c mishandles buffer limits for CAC certificates.
Vulnerability category: Overflow
Products affected by CVE-2019-19481
- cpe:2.3:a:opensc_project:opensc:0.20.0:rc1:*:*:*:*:*:*
- cpe:2.3:a:opensc_project:opensc:0.20.0:rc2:*:*:*:*:*:*
- cpe:2.3:a:opensc_project:opensc:0.20.0:rc3:*:*:*:*:*:*
- cpe:2.3:a:opensc_project:opensc:0.19.0:-:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-19481
0.12%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 47 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-19481
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
2.1
|
LOW | AV:L/AC:L/Au:N/C:N/I:N/A:P |
3.9
|
2.9
|
NIST | |
|
4.6
|
MEDIUM | CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
0.9
|
3.6
|
NIST |
CWE ids for CVE-2019-19481
-
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-19481
-
http://www.openwall.com/lists/oss-security/2019/12/29/1
oss-security - OpenSC 0.20.0 releasedMailing List
-
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=18618
18618 - opensc:fuzz_pkcs15_reader: Crash in sc_transmit_apdu - oss-fuzz - OSS-Fuzz: Fuzzing the planet - MonorailPermissions Required;Third Party Advisory
-
https://github.com/OpenSC/OpenSC/commit/b75c002cfb1fd61cd20ec938ff4937d7b1a94278
cac1: Correctly handle the buffer limits · OpenSC/OpenSC@b75c002 · GitHubPatch
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NDSQLMZZYBHO5X3BK7D6E7E6NZIMZDI5/
[SECURITY] Fedora 31 Update: opensc-0.20.0-3.fc31 - package-announce - Fedora Mailing-Lists
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