Vulnerability Name:

CVE-2020-1693 (CCN-176425)

Assigned:2019-11-27
Published:2020-01-13
Updated:2020-02-20
Summary:A flaw was found in Spacewalk up to version 2.9 where it was vulnerable to XML internal entity attacks via the /rpc/api endpoint. An unauthenticated remote attacker could use this flaw to retrieve the content of certain files and trigger a denial of service, or in certain circumstances, execute arbitrary code on the Spacewalk server.
CVSS v3 Severity:9.8 Critical (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
8.5 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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): High
Integrity (I): High
Availibility (A): High
7.8 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
6.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
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): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:7.5 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
6.8 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-611
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2020-1693

Source: CCN
Type: Red Hat Bugzilla – Bug 1790381
(CVE-2020-1693) - CVE-2020-1693 spacewalk: XML entity attacks on /rpc/api

Source: CONFIRM
Type: Issue Tracking, Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1693

Source: XF
Type: UNKNOWN
redhat-cve20201693-code-exec(176425)

Source: CCN
Type: spacewalk GIT Repository
1791164 - disable external entity parsing

Source: MISC
Type: Patch
https://github.com/spacewalkproject/spacewalk/commit/74e28ec61d916c42061ef4347121650a1c962b0c

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2020-1693

Source: MISC
Type: Exploit, Third Party Advisory
https://zeroauth.ltd/blog/2020/02/18/proof-of-concept-exploit-for-cve-2020-1693-spacewalk/

Vulnerable Configuration:Configuration 1:
  • cpe:/a:redhat:spacewalk:*:*:*:*:*:*:*:* (Version < 2.9)

    • Configuration CCN 1:
  • cpe:/a:redhat:spacewalk:2.9:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:20201693
    V
    		CVE-2020-1693
    2022-05-22
    oval:org.opensuse.security:def:66000
    P
    		Security update for jasper (Moderate)
    2020-12-01
    oval:org.opensuse.security:def:66092
    P
    		Security update for SUSE Manager Server 4.0 (Moderate)
    2020-12-01
    oval:org.opensuse.security:def:91687
    P
    		Security update for SUSE Manager Server 4.0 (Moderate)
    2020-03-13
    BACK
    redhat spacewalk *
    redhat spacewalk 2.9