CVE-2020-12402

Published: Jul 9, 2020Modified: Nov 21, 2024

4.4

Vector

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

Exploitability: 0.8 / Impact: 3.6

Source: NVD

Description

During RSA key generation, bignum implementations used a variation of the Binary Extended Euclidean Algorithm which entailed significantly input-dependent flow. This allowed an attacker able to perform electromagnetic-based side channel attacks to record traces leading to the recovery of the secret primes. *Note:* An unmodified Firefox browser does not generate RSA keys in normal operation and is not affected, but products built on top of it might. This vulnerability affects Firefox < 78.

Affected (5)

Products: Mozilla: Firefox · Fedoraproject: Fedora · Opensuse: Leap · +1 more

Show all products

Mozilla: Firefox · Fedoraproject: Fedora · Opensuse: Leap · Debian: Debian Linux

1 product

1 product

1 product

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Mozilla Firefox	Before 78.0

Configuration B

3 vulnerable

Vulnerable Software	Affected Versions
Fedoraproject Fedora	Version 32
Opensuse Leap	Version 15.1
Opensuse Leap	Version 15.2

Configuration C

1 vulnerable

Vulnerable Software	Affected Versions
Debian Debian Linux	Version 9.0

Related CWEs

Observable Discrepancy

The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.

References (26)

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00016.html

Source: security@mozilla.org

Third Party Advisory

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00018.html

Source: security@mozilla.org

Third Party Advisory

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html

Source: security@mozilla.org

Third Party Advisory

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html

Source: security@mozilla.org

Third Party Advisory

https://bugzilla.mozilla.org/show_bug.cgi?id=1631597

Source: security@mozilla.org

Issue TrackingPermissions RequiredVendor Advisory

https://lists.debian.org/debian-lts-announce/2020/09/msg00029.html

Source: security@mozilla.org

Mailing ListThird Party Advisory

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RFL6UNFK4MG2WDXLMLFAEIUSM5EUK7CG/

Source: security@mozilla.org

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UWVDJRARXNWWWTCGMM63EXLQHH2LNOXO/

Source: security@mozilla.org

https://security.gentoo.org/glsa/202007-10

Source: security@mozilla.org

Third Party Advisory

https://usn.ubuntu.com/4417-1/

Source: security@mozilla.org

Third Party Advisory

https://usn.ubuntu.com/4417-2/

Source: security@mozilla.org

Third Party Advisory

https://www.debian.org/security/2020/dsa-4726

Source: security@mozilla.org

Third Party Advisory

https://www.mozilla.org/security/advisories/mfsa2020-24/

Source: security@mozilla.org

Vendor Advisory

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00016.html

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00018.html

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

https://bugzilla.mozilla.org/show_bug.cgi?id=1631597

Source: af854a3a-2127-422b-91ae-364da2661108

Issue TrackingPermissions RequiredVendor Advisory

https://lists.debian.org/debian-lts-announce/2020/09/msg00029.html

Source: af854a3a-2127-422b-91ae-364da2661108

Mailing ListThird Party Advisory

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RFL6UNFK4MG2WDXLMLFAEIUSM5EUK7CG/

Source: af854a3a-2127-422b-91ae-364da2661108

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UWVDJRARXNWWWTCGMM63EXLQHH2LNOXO/

Source: af854a3a-2127-422b-91ae-364da2661108

https://security.gentoo.org/glsa/202007-10

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

https://usn.ubuntu.com/4417-1/

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

https://usn.ubuntu.com/4417-2/

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

https://www.debian.org/security/2020/dsa-4726

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

https://www.mozilla.org/security/advisories/mfsa2020-24/

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

Timeline

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