Vulnerability Name:

CVE-2021-37149 (CCN-212716)

Assigned:2021-11-02
Published:2021-11-02
Updated:2022-10-14
Summary:Improper Input Validation vulnerability in header parsing of Apache Traffic Server allows an attacker to smuggle requests. This issue affects Apache Traffic Server 8.0.0 to 8.1.2 and 9.0.0 to 9.1.0.
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:H/A:N)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/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): High
Availibility (A): None
6.5 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N)
5.7 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/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): Low
Integrity (I): Low
Availibility (A): None
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
6.4 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): None
Vulnerability Type:CWE-20
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2021-37149

Source: XF
Type: UNKNOWN
apache-cve202137149-request-smuggling(212716)

Source: CCN
Type: Apache Mailing List, Tuesday, November 2, 2021 5:00:25 PM
[ANNOUNCE] Apache Traffic Server is vulnerable to various smuggle, DOS, and validation attacks

Source: MISC
Type: Mailing List, Patch, Vendor Advisory
https://lists.apache.org/thread/k01797hyncx53659wr3o72s5cvkc3164

Source: CCN
Type: oss-sec Mailing List, Tue, 2 Nov 2021 14:25:48 -0700
Apache Traffic Server is vulnerable to various smuggle, DOS, and validation attacks

Source: CCN
Type: Apache Web site
Apache Traffic Server

Source: DEBIAN
Type: Third Party Advisory
DSA-5153

Vulnerable Configuration:Configuration 1:
  • cpe:/a:apache:traffic_server:*:*:*:*:*:*:*:* (Version >= 8.0.0 and <= 8.1.2)
  • OR cpe:/a:apache:traffic_server:*:*:*:*:*:*:*:* (Version >= 9.0.0 and <= 9.1.0)

  • Configuration 2:
  • cpe:/o:debian:debian_linux:10.0:*:*:*:*:*:*:*
  • OR cpe:/o:debian:debian_linux:11.0:*:*:*:*:*:*:*

  • Configuration CCN 1:
  • cpe:/a:apache:traffic_server:8.0.0:*:*:*:*:*:*:*
  • OR cpe:/a:apache:traffic_server:9.0.0:-:*:*:*:*:*:*
  • OR cpe:/a:apache:traffic_server:8.1.2:rc0:*:*:*:*:*:*

  • * Denotes that component is vulnerable
    BACK
    apache traffic server *
    apache traffic server *
    debian debian linux 10.0
    debian debian linux 11.0
    apache traffic server 8.0.0
    apache traffic server 9.0.0 -
    apache traffic server 8.1.2 rc0