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ubuntucveUbuntu.comUB:CVE-2020-26572
HistoryOct 06, 2020 - 12:00 a.m.

CVE-2020-26572

2020-10-0600:00:00
ubuntu.com
ubuntu.com
23
tcos
smart card
buffer overflow
opensc
unix
cve-2020-26572

CVSS2

2.1

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:L/AC:L/Au:N/C:N/I:N/A:P

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

0.001

Percentile

19.0%

The TCOS smart card software driver in OpenSC before 0.21.0-rc1 has a
stack-based buffer overflow in tcos_decipher.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchopensc< 0.17.0-3ubuntu0.1~esm1UNKNOWN
ubuntu20.04noarchopensc< 0.20.0-3ubuntu0.1~esm1UNKNOWN
ubuntu16.04noarchopensc< 0.15.0-1ubuntu1+esm1UNKNOWN

CVSS2

2.1

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:L/AC:L/Au:N/C:N/I:N/A:P

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

0.001

Percentile

19.0%