CVE-2020-1045

<p>A security feature bypass vulnerability exists in the way Microsoft ASP.NET Core parses encoded cookie names.</p>
<p>The ASP.NET Core cookie parser decodes entire cookie strings which could allow a malicious attacker to set a second cookie with the name being percent encoded.</p>
<p>The security update addresses the vulnerability by fixing the way the ASP.NET Core cookie parser handles encoded names.</p>
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
microsoftCNA
7.5 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:P/RL:O/RC:C
CVEADP
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CISA-ADPADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 93%
VendorProductVersion
microsoftasp.net_core
2.1 ≤
𝑥
≤ 2.1.21
microsoftasp.net_core
3.1 ≤
𝑥
< 3.1.8
redhatenterprise_linux
8.0
redhatenterprise_linux_aus
8.2
redhatenterprise_linux_aus
8.4
redhatenterprise_linux_aus
8.6
redhatenterprise_linux_eus
8.2
redhatenterprise_linux_eus
8.4
redhatenterprise_linux_eus
8.6
redhatenterprise_linux_tus
8.2
redhatenterprise_linux_tus
8.4
redhatenterprise_linux_tus
8.6
𝑥
= Vulnerable software versions