7.5
HIGH
CVE-2019-11503
Snap-confine Symlink Race Vulnerability
Description

snap-confine as included in snapd before 2.39 did not guard against symlink races when performing the chdir() to the current working directory of the calling user, aka a "cwd restore permission bypass."

INFO

Published Date :

April 24, 2019, 9:29 p.m.

Last Modified :

Nov. 21, 2024, 4:21 a.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2019-11503 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Canonical snapd
1 Snapcraft snapd

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2019-11503 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2019-11503 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference http://www.openwall.com/lists/oss-security/2019/04/25/7
    Added Reference https://github.com/snapcore/snapd/pull/6642
    Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6VACEKVQ7UAZ32WO4ZKCFW6YOBSYJ76L/
    Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VPU6APEZHAA7N2AI57OT4J2P7NKHFOLM/
    Added Reference https://www.openwall.com/lists/oss-security/2019/04/18/4
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6VACEKVQ7UAZ32WO4ZKCFW6YOBSYJ76L/ [No types assigned]
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VPU6APEZHAA7N2AI57OT4J2P7NKHFOLM/ [No types assigned]
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/VPU6APEZHAA7N2AI57OT4J2P7NKHFOLM/
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/6VACEKVQ7UAZ32WO4ZKCFW6YOBSYJ76L/
  • CVE Modified by [email protected]

    Jul. 13, 2019

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/VPU6APEZHAA7N2AI57OT4J2P7NKHFOLM/ [No Types Assigned]
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/6VACEKVQ7UAZ32WO4ZKCFW6YOBSYJ76L/ [No Types Assigned]
  • Initial Analysis by [email protected]

    May. 02, 2019

    Action Type Old Value New Value
    Added CVSS V2 (AV:N/AC:L/Au:N/C:N/I:P/A:N)
    Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
    Changed Reference Type http://www.openwall.com/lists/oss-security/2019/04/25/7 No Types Assigned http://www.openwall.com/lists/oss-security/2019/04/25/7 Third Party Advisory
    Changed Reference Type https://www.openwall.com/lists/oss-security/2019/04/18/4 No Types Assigned https://www.openwall.com/lists/oss-security/2019/04/18/4 Exploit, Mailing List, Patch, Third Party Advisory
    Changed Reference Type https://github.com/snapcore/snapd/pull/6642 No Types Assigned https://github.com/snapcore/snapd/pull/6642 Third Party Advisory
    Added CWE CWE-59
    Added CPE Configuration OR *cpe:2.3:a:canonical:snapd:*:*:*:*:*:*:*:* versions up to (excluding) 2.39
  • CVE Modified by [email protected]

    Apr. 25, 2019

    Action Type Old Value New Value
    Added Reference http://www.openwall.com/lists/oss-security/2019/04/25/7 [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2019-11503 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2019-11503 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.32 }} 0.02%

score

0.70002

percentile

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability