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debiancveDebian Security Bug TrackerDEBIANCVE:CVE-2021-20271
HistoryMar 26, 2021 - 5:15 p.m.

CVE-2021-20271

2021-03-2617:15:13
Debian Security Bug Tracker
security-tracker.debian.org
19
rpm
signature check
code execution
data integrity
confidentiality
system availability
cve-2021-20271

CVSS2

5.1

Attack Vector

NETWORK

Attack Complexity

HIGH

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

7

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

0.002

Percentile

61.2%

A flaw was found in RPM’s signature check functionality when reading a package file. This flaw allows an attacker who can convince a victim to install a seemingly verifiable package, whose signature header was modified, to cause RPM database corruption and execute code. The highest threat from this vulnerability is to data integrity, confidentiality, and system availability.

OSVersionArchitecturePackageVersionFilename
Debian12allrpm< 4.16.1.2+dfsg1-1rpm_4.16.1.2+dfsg1-1_all.deb
Debian11allrpm< 4.16.1.2+dfsg1-1rpm_4.16.1.2+dfsg1-1_all.deb
Debian999allrpm< 4.16.1.2+dfsg1-1rpm_4.16.1.2+dfsg1-1_all.deb
Debian13allrpm< 4.16.1.2+dfsg1-1rpm_4.16.1.2+dfsg1-1_all.deb

CVSS2

5.1

Attack Vector

NETWORK

Attack Complexity

HIGH

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

7

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

0.002

Percentile

61.2%