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ubuntucveUbuntu.comUB:CVE-2020-27618
HistoryFeb 26, 2021 - 12:00 a.m.

CVE-2020-27618

2021-02-2600:00:00
ubuntu.com
ubuntu.com
21

5.5 Medium

CVSS3

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

2.1 Low

CVSS2

Access Vector

LOCAL

Access 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

0.001 Low

EPSS

Percentile

19.7%

JSON

The iconv function in the GNU C Library (aka glibc or libc6) 2.32 and
earlier, when processing invalid multi-byte input sequences in IBM1364,
IBM1371, IBM1388, IBM1390, and IBM1399 encodings, fails to advance the
input state, which could lead to an infinite loop in applications,
resulting in a denial of service, a different vulnerability from
CVE-2016-10228.

Bugs

Notes

Author Note
sbeattie addressing this issue likely also depends on addressing CVE-2016-10228 which is upstream commit 91927b7c76 (“Rewrite iconv option parsing [BZ #19519]”) in older versions on glibc, but is a pretty significant change.
OSVersionArchitecturePackageVersionFilename
ubuntu14.04noarcheglibc< anyUNKNOWN
ubuntu18.04noarchglibc< 2.27-3ubuntu1.5UNKNOWN
ubuntu20.04noarchglibc< 2.31-0ubuntu9.7UNKNOWN
ubuntu16.04noarchglibc< 2.23-0ubuntu11.3+esm3) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN

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5.5 Medium

CVSS3

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

2.1 Low

CVSS2

Access Vector

LOCAL

Access 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

0.001 Low

EPSS

Percentile

19.7%

JSON
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