CURL-CVE-2019-5436
- Source
- https://curl.se/docs/CVE-2019-5436.html
- Import Source
- https://curl.se/docs/CURL-CVE-2019-5436.json
- JSON Data
- https://api.osv.dev/v1/vulns/CURL-CVE-2019-5436
- Aliases
- Published
- 2019-05-22T08:00:00Z
- Modified
- 2024-01-25T02:42:48.799746Z
- Summary
- TFTP receive buffer overflow
- Details
-
libcurl contains a heap buffer overflow in the function (
tftp_receive_packet()) that receives data from a TFTP server. It callsrecvfrom()with the default size for the buffer rather than with the size that was used to allocate it. Thus, the content that might overwrite the heap memory is entirely controlled by the server.The flaw exists if the user selects to use a
blksizeof 504 or smaller (default is 512). The smaller size that is used, the larger the possible overflow becomes.Users choosing a smaller size than default should be rare as the primary use case for changing the size is to make it larger.
It is rare for users to use TFTP across the Internet. It is most commonly used within local networks.
- References
-
- Credits
-
-
- l00p3r - FINDER
-
- Daniel Stenberg - REMEDIATION_DEVELOPER
-
Affected packages
Git / github.com/curl/curl.git
Affected ranges
- Type
- SEMVER
- Events
-
Introduced7.19.4Fixed7.65.0
- Type
- GIT
- Repo
- https://github.com/curl/curl.git
- Events
Affected versions
7.*
7.19.4
7.19.5
7.19.6
7.19.7
7.20.0
7.20.1
7.21.0
7.21.1
7.21.2
7.21.3
7.21.4
7.21.5
7.21.6
7.21.7
7.22.0
7.23.0
7.23.1
7.24.0
7.25.0
7.26.0
7.27.0
7.28.0
7.28.1
7.29.0
7.30.0
7.31.0
7.32.0
7.33.0
7.34.0
7.35.0
7.36.0
7.37.0
7.37.1
7.38.0
7.39.0
7.40.0
7.41.0
7.42.0
7.42.1
7.43.0
7.44.0
7.45.0
7.46.0
7.47.0
7.47.1
7.48.0
7.49.0
7.49.1
7.50.0
7.50.1
7.50.2
7.50.3
7.51.0
7.52.0
7.52.1
7.53.0
7.53.1
7.54.0
7.54.1
7.55.0
7.55.1
7.56.0
7.56.1
7.57.0
7.58.0
7.59.0
7.60.0
7.61.0
7.61.1
7.62.0
7.63.0
7.64.0
7.64.1