Firefox <116 cookie jar inconsistency - Missing cookies on request
CVE-2023-4055 Published on August 1, 2023
When the number of cookies per domain was exceeded in `document.cookie`, the actual cookie jar sent to the host was no longer consistent with expected cookie jar state. This could have caused requests to be sent with some cookies missing. This vulnerability affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1.
Weakness Type
What is a Classic Buffer Overflow Vulnerability?
The program copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. A buffer overflow condition exists when a program attempts to put more data in a buffer than it can hold, or when a program attempts to put data in a memory area outside of the boundaries of a buffer. The simplest type of error, and the most common cause of buffer overflows, is the "classic" case in which the program copies the buffer without restricting how much is copied. Other variants exist, but the existence of a classic overflow strongly suggests that the programmer is not considering even the most basic of security protections.
CVE-2023-4055 has been classified to as a Classic Buffer Overflow vulnerability or weakness.
Products Associated with CVE-2023-4055
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Affected Versions
Mozilla Firefox:- Version unspecified and below 116 is affected.
- Version unspecified and below 102.14 is affected.
- Version unspecified and below 115.1 is affected.
- Before 116 is affected.
- Before 102.14 is affected.
- Before 115.1 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.