Vulnerability Name:

CVE-2018-9860 (CCN-141621)

Assigned:2018-04-10
Published:2018-04-10
Updated:2019-10-03
Summary:An issue was discovered in Botan 1.11.32 through 2.x before 2.6.0. An off-by-one error when processing malformed TLS-CBC ciphertext could cause the receiving side to include in the HMAC computation exactly 64K bytes of data following the record buffer, aka an over-read. The MAC comparison will subsequently fail and the connection will be closed. This could be used for denial of service. No information leak occurs.
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
7.5 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-193
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2018-9860

Source: CCN
Type: Botan Web site
Security Advisories

Source: MISC
Type: Vendor Advisory
https://botan.randombit.net/security.html

Source: MISC
Type: Issue Tracking
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=7434

Source: XF
Type: UNKNOWN
botan-cve20189860-dos(141621)

Vulnerable Configuration:Configuration 1:
  • cpe:/a:botan_project:botan:*:*:*:*:*:*:*:* (Version >= 1.11.32 and < 2.6.0)

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:111882
    P
    		Botan-2.18.1-1.3 on GA media (Moderate)
    2022-01-17
    oval:org.opensuse.security:def:105462
    P
    		Botan-2.18.1-1.3 on GA media (Moderate)
    2021-10-01
    oval:com.ubuntu.xenial:def:201898600000000
    V
    		CVE-2018-9860 on Ubuntu 16.04 LTS (xenial) - medium.
    2018-04-12
    oval:com.ubuntu.artful:def:20189860000
    V
    		CVE-2018-9860 on Ubuntu 17.10 (artful) - medium.
    2018-04-12
    oval:com.ubuntu.xenial:def:20189860000
    V
    		CVE-2018-9860 on Ubuntu 16.04 LTS (xenial) - medium.
    2018-04-12
    oval:com.ubuntu.disco:def:201898600000000
    V
    		CVE-2018-9860 on Ubuntu 19.04 (disco) - medium.
    2018-04-12
    oval:com.ubuntu.bionic:def:20189860000
    V
    		CVE-2018-9860 on Ubuntu 18.04 LTS (bionic) - medium.
    2018-04-12
    oval:com.ubuntu.cosmic:def:201898600000000
    V
    		CVE-2018-9860 on Ubuntu 18.10 (cosmic) - medium.
    2018-04-12
    oval:com.ubuntu.cosmic:def:20189860000
    V
    		CVE-2018-9860 on Ubuntu 18.10 (cosmic) - medium.
    2018-04-12
    oval:com.ubuntu.bionic:def:201898600000000
    V
    		CVE-2018-9860 on Ubuntu 18.04 LTS (bionic) - medium.
    2018-04-12
    oval:com.ubuntu.trusty:def:20189860000
    V
    		CVE-2018-9860 on Ubuntu 14.04 LTS (trusty) - medium.
    2018-04-12
    BACK
    botan_project botan *