Vulnerability Name:

CVE-2017-11343 (CCN-129041)

Assigned:2017-07-16
Published:2017-07-16
Updated:2017-07-26
Summary:Due to an incomplete fix for CVE-2012-6125, all versions of CHICKEN Scheme up to and including 4.12.0 are vulnerable to an algorithmic complexity attack. An attacker can provide crafted input which, when inserted into the symbol table, will result in O(n) lookup time.
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)
6.6 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:U/RC:R)
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
5.5 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
4.9 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
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: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
4.6 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-407
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2017-11343

Source: CCN
Type: Chicken Mailing List, Sun, 16 Jul 2017 20:32:03 +0200
Vulnerability to algorithmic complexity at

Source: CONFIRM
Type: Vendor Advisory
http://lists.gnu.org/archive/html/chicken-announce/2017-07/msg00000.html

Source: CCN
Type: CHICKEN Web site
[PATCH 2/2] Initialize symbol table after setting up randomization

Source: XF
Type: UNKNOWN
chicken-cve201711343-dos(129041)

Vulnerable Configuration:Configuration 1:
  • cpe:/a:call-cc:chicken:*:*:*:*:*:*:*:* (Version <= 4.12.0)

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.xenial:def:2017113430000000
    V
    		CVE-2017-11343 on Ubuntu 16.04 LTS (xenial) - low.
    2017-07-17
    oval:com.ubuntu.artful:def:201711343000
    V
    		CVE-2017-11343 on Ubuntu 17.10 (artful) - low.
    2017-07-17
    oval:com.ubuntu.xenial:def:201711343000
    V
    		CVE-2017-11343 on Ubuntu 16.04 LTS (xenial) - low.
    2017-07-17
    oval:com.ubuntu.disco:def:2017113430000000
    V
    		CVE-2017-11343 on Ubuntu 19.04 (disco) - low.
    2017-07-17
    oval:com.ubuntu.bionic:def:201711343000
    V
    		CVE-2017-11343 on Ubuntu 18.04 LTS (bionic) - low.
    2017-07-17
    oval:com.ubuntu.cosmic:def:2017113430000000
    V
    		CVE-2017-11343 on Ubuntu 18.10 (cosmic) - low.
    2017-07-17
    oval:com.ubuntu.cosmic:def:201711343000
    V
    		CVE-2017-11343 on Ubuntu 18.10 (cosmic) - low.
    2017-07-17
    oval:com.ubuntu.bionic:def:2017113430000000
    V
    		CVE-2017-11343 on Ubuntu 18.04 LTS (bionic) - low.
    2017-07-17
    oval:com.ubuntu.trusty:def:201711343000
    V
    		CVE-2017-11343 on Ubuntu 14.04 LTS (trusty) - low.
    2017-07-17
    BACK
    call-cc chicken *