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CVE-2017-18199

Publication date 24 February 2018

Last updated 24 July 2024

Ubuntu priority

Low

Why this priority?

Cvss 3 Severity Score

6.5 · Medium

Score breakdown

realloc_symlink in rock.c in GNU libcdio before 1.0.0 allows remote attackers to cause a denial of service (NULL Pointer Dereference) via a crafted iso file.

Read the notes from the security team

Status

Package Ubuntu Release Status
libcdio 22.10 kinetic
Not affected
22.04 LTS jammy
Not affected
21.10 impish
Not affected
21.04 hirsute
Not affected
20.10 groovy
Not affected
20.04 LTS focal
Not affected
19.10 eoan
Not affected
19.04 disco
Not affected
18.10 cosmic
Not affected
18.04 LTS bionic
Not affected
17.10 artful Ignored end of life
16.04 LTS xenial
14.04 LTS trusty

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Notes

ccdm94

there is no explicit information mentioning what is the patch for this CVE, but it looks like it might have been fixed together with other issues in commit b9ab2a9d36a, according to the comment in the NEWS file. This is the commit that patches CVE-2017-18198. No other changes made to the to the code seem to be related to this vulnerability other than e73a8bb23a4, which looks like an initial version of something improved by commit b9ab2a9d36a. Commit e73a8bb23a4 fixes issue 52091 which is very similar to the issue that is CVE-2017-18198. CVE-2017-18199 involves code that is closely related to the code that is affected by CVE-2017-18198, and further research indicates that the POC for this latter CVE no longer causes a crash when commit e73a8bb23a4 is applied, so it is adequate to assume that it fixes CVE-2017-18199 and that commit b9ab2a9d36a, the improved version of e73a8bb23a4, does so as well.

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
libcdio

Severity score breakdown

Parameter Value
Base score 6.5 · Medium
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-5558-1
    • libcdio vulnerabilities
    • 10 August 2022

Other references