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archlinuxArchLinuxASA-201802-15
HistoryFeb 24, 2018 - 12:00 a.m.

[ASA-201802-15] mbedtls: arbitrary code execution

2018-02-2400:00:00
security.archlinux.org
13

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

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

EPSS

0.069

Percentile

93.9%

Arch Linux Security Advisory ASA-201802-15

Severity: High
Date : 2018-02-24
CVE-ID : CVE-2018-0487 CVE-2018-0488
Package : mbedtls
Type : arbitrary code execution
Remote : Yes
Link : https://security.archlinux.org/AVG-617

Summary

The package mbedtls before version 2.7.0-1 is vulnerable to arbitrary
code execution.

Resolution

Upgrade to 2.7.0-1.

pacman -Syu “mbedtls>=2.7.0-1”

The problems have been fixed upstream in version 2.7.0.

Workaround

None.

Description

  • CVE-2018-0487 (arbitrary code execution)

ARM mbed TLS before 2.7.0 allows remote attackers to execute arbitrary
code or cause a denial of service (buffer overflow) via a crafted
certificate chain that is mishandled during RSASSA-PSS signature
verification within a TLS or DTLS session.

  • CVE-2018-0488 (arbitrary code execution)

ARM mbed TLS before 2.7.0, when the truncated HMAC extension and CBC
are used, allows remote attackers to execute arbitrary code or cause a
denial of service (heap corruption) via a crafted application packet
within a TLS or DTLS session.

Impact

A remote attacker is able to execute arbitrary code on the affected
host.

References

https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2018-01
https://security.archlinux.org/CVE-2018-0487
https://security.archlinux.org/CVE-2018-0488

OSVersionArchitecturePackageVersionFilename
ArchLinuxanyanymbedtls< 2.7.0-1UNKNOWN

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

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

EPSS

0.069

Percentile

93.9%