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Ubuntu.comUB:CVE-2020-36177

HistoryJan 06, 2021 - 12:00 a.m.

CVE-2020-36177

2021-01-0600:00:00

ubuntu.com

rsapad_pss

wolfssl

out-of-bounds write

key size

digest size relationships

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

0.004

Percentile

73.3%

JSON

RsaPad_PSS in wolfcrypt/src/rsa.c in wolfSSL before 4.6.0 has an
out-of-bounds write for certain relationships between key size and digest
size.

Bugs

<https://bugs.launchpad.net/ubuntu/+source/wolfssl/+bug/1914474>

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchwolfssl< anyUNKNOWN
ubuntu20.04noarchwolfssl< anyUNKNOWN
ubuntu22.04noarchwolfssl< anyUNKNOWN
ubuntu24.04noarchwolfssl< anyUNKNOWN
ubuntu16.04noarchwolfssl< anyUNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	wolfssl	< any	UNKNOWN
ubuntu	20.04	noarch	wolfssl	< any	UNKNOWN
ubuntu	22.04	noarch	wolfssl	< any	UNKNOWN
ubuntu	24.04	noarch	wolfssl	< any	UNKNOWN
ubuntu	16.04	noarch	wolfssl	< any	UNKNOWN

References

bugs.chromium.org/p/oss-fuzz/issues/detail?id=26567

github.com/wolfSSL/wolfssl/commit/63bf5dc56ccbfc12a73b06327361687091a4c6f7

github.com/wolfSSL/wolfssl/commit/fb2288c46dd4c864b78f00a47a364b96a09a5c0f

github.com/wolfSSL/wolfssl/pull/3426

github.com/wolfSSL/wolfssl/releases/tag/v4.6.0-stable

launchpad.net/bugs/cve/CVE-2020-36177

nvd.nist.gov/vuln/detail/CVE-2020-36177

security-tracker.debian.org/tracker/CVE-2020-36177

www.cve.org/CVERecord?id=CVE-2020-36177

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

0.004

Percentile

73.3%

JSON

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