Bug 2254395 (CVE-2023-6779) - CVE-2023-6779 glibc: off-by-one heap-based buffer overflow in __vsyslog_internal()
Summary: CVE-2023-6779 glibc: off-by-one heap-based buffer overflow in __vsyslog_inter...
Keywords:
Status: NEW
Alias: CVE-2023-6779
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
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Depends On: 2261988
Blocks: 2249054
TreeView+ depends on / blocked
 
Reported: 2023-12-13 18:28 UTC by Guilherme de Almeida Suckevicz
Modified: 2024-02-28 06:19 UTC (History)
48 users (show)

Fixed In Version: glibc 2.39
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Doc Text:
An off-by-one heap-based buffer overflow was found in the __vsyslog_internal function of the glibc library. This function is called by the syslog and vsyslog functions. This issue occurs when these functions are called with a message bigger than INT_MAX bytes, leading to an incorrect calculation of the buffer size to store the message, resulting in an application crash. This issue affects glibc 2.37 and newer.
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Description Guilherme de Almeida Suckevicz 2023-12-13 18:28:56 UTC 
An off-by-one heap-based buffer overflow was found in the __vsyslog_internal function of the glibc library. This function is called by the syslog and vsyslog functions. This issue occurs when these functions are called with a message bigger than INT_MAX bytes, leading to an incorrect calculation of the buffer size to store the message, resulting in an application crash. This issue affects glibc 2.37 and newer.
Comment 1 Guilherme de Almeida Suckevicz 2024-01-30 18:46:46 UTC 
Created glibc tracking bugs for this issue:

Affects: fedora-all [bug 2261988]
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