CVE-2018-5123
published 2019-04-29CVE-2018-5123: A third party website can access information available to a user with access to a restricted bug entry using the image generation in report.cgi in all Bugzilla…
PriorityP339high8.8CVSS 3.0
AVNACLPRNUIRSUCHIHAH
EPSS
0.50%
39.8th percentile
A third party website can access information available to a user with access to a restricted bug entry using the image generation in report.cgi in all Bugzilla versions prior to 4.4.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mozilla | bugzilla | < 4.4 | 4.4 |
| mozilla | bugzilla | — | — |
CVSS provenance
nvdv3.08.8HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
nvdv2.06.8MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P
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Bugzilla
CVE-2018-20669 kernel: missing access_ok() checks in i915_gem_execbuffer2_ioctl() results in priviledge escalation
bugzilla·2019-01-24·CVSS 8.8
CVE-2018-20669 [HIGH] CVE-2018-20669 kernel: missing access_ok() checks in i915_gem_execbuffer2_ioctl() results in priviledge escalation
CVE-2018-20669 kernel: missing access_ok() checks in i915_gem_execbuffer2_ioctl() results in priviledge escalation
Linux kernel is not checking a provided address with access_ok() when accessing userspace data in certain situations. Lack of such checks in i915_gem_execbuffer2_ioctl in drivers/gpu/drm/i915/i915_gem_execbuffer.c may allow a local unprivileged attacker to possible escalate its privileges.
References:
https://salls.github.io/Linux-Kernel-CVE-2017-5123/ (missing access_ok() check described)
Upstream patch:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=594cc251fdd0d231d342d88b2fdff4bc42fb0690
Discussion:
Created kernel tracking bugs for this issue:
Affects: fedora-all [bug 1669142]
---
This is fixed for Fedora with the 4.20.{3,4} kernel
Bugzilla
CVE-2018-5123 bugzilla: CSRF in report.cgi allows to extract confidential information from a bug
bugzilla·2018-02-19·CVSS 8.8
CVE-2018-5123 [HIGH] CVE-2018-5123 bugzilla: CSRF in report.cgi allows to extract confidential information from a bug
CVE-2018-5123 bugzilla: CSRF in report.cgi allows to extract confidential information from a bug
A flaw was found in Bugzilla Bugzilla 2.16rc1 to 4.4.12, 4.5.1 to 5.0.3. A Cross-Site Request Forgery (CSRF) vulnerability in report.cgi would allow a third-party site to extract confidential information from a bug the victim had access to.
References:
https://packetstormsecurity.com/files/146473/bugzilla45-xsrf.txt
https://bugzilla.mozilla.org/show_bug.cgi?id=1433400
Patch:
https://bugzilla.mozilla.org/attachment.cgi?id=8950824&action=edit [4.4]
https://bugzilla.mozilla.org/attachment.cgi?id=8951341&action=edit [5.0]
Discussion:
Created bugzilla tracking bugs for this issue:
Affects: epel-6 [bug 1546887]
Bugzilla
CVE-2018-5123 bugzilla: CSRF in report.cgi allows to extract confidential information from a bug [epel-6]
bugzilla·2018-02-19·CVSS 8.8
CVE-2018-5123 [HIGH] CVE-2018-5123 bugzilla: CSRF in report.cgi allows to extract confidential information from a bug [epel-6]
CVE-2018-5123 bugzilla: CSRF in report.cgi allows to extract confidential information from a bug [epel-6]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of epel-6.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
Discussion:
Use the followi
Bugzilla
Prevent cross-site image requests from leaking contents of certain fields due to regex search
bugzilla·2018-01-26
[MEDIUM] Prevent cross-site image requests from leaking contents of certain fields due to regex search
Prevent cross-site image requests from leaking contents of certain fields due to regex search
Via the image generation in report.cgi it is possible for a third-party website to extract confidential bug information if a logged-in user with access to a confidential bug visits the website. For example, a third-party website can access the summary of a security-sensitive bug report.
The problem exists because via report.cgi complex queries to the bugzilla database can be done and if there is a result, an image will be returned, but if the query has no result no image is returned. Because of this a third-party website can extract information by detecting if certain images can be loaded or not.
POC:
1.) download attached poc.html
2.) login to bugzilla
3.) open poc.html and enter a bug id of a
2019-04-29
Published