CURL-CVE-2018-14618

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Source
https://curl.se/docs/CVE-2018-14618.html
Import Source
https://curl.se/docs/CURL-CVE-2018-14618.json
JSON Data
https://api.osv.dev/v1/vulns/CURL-CVE-2018-14618
Aliases
Published
2018-09-05T08:00:00Z
Modified
2024-07-02T09:22:24Z
Summary
NTLM password overflow via integer overflow
Details

libcurl contains a buffer overrun in the NTLM authentication code.

The internal function Curl_ntlm_core_mk_nt_hash multiplies the length of the password by two (SUM) to figure out how large temporary storage area to allocate from the heap.

The length value is then subsequently used to iterate over the password and generate output into the allocated storage buffer. On systems with a 32 bit size_t, the math to calculate SUM triggers an integer overflow when the password length exceeds 2GB (2^31 bytes). This integer overflow usually causes a very small buffer to actually get allocated instead of the intended very huge one, making the use of that buffer end up in a heap buffer overflow.

(This bug is almost identical to CVE-2017-8816.)

Database specific 
{
    "CWE": {
        "id": "CWE-131",
        "desc": "Incorrect Calculation of Buffer Size"
    },
    "package": "curl",
    "URL": "https://curl.se/docs/CVE-2018-14618.json",
    "severity": "High",
    "www": "https://curl.se/docs/CVE-2018-14618.html",
    "last_affected": "7.61.0"
}
References
Credits
    • Zhaoyang Wu - FINDER
    • Daniel Stenberg - REMEDIATION_DEVELOPER

Affected packages

Git / github.com/curl/curl.git

Affected ranges

Type
SEMVER
Events
Introduced
7.15.4
Fixed
7.61.1
Type
GIT
Repo
https://github.com/curl/curl.git
Events
Introduced
be285cde3f52571087816759220a68cb994d9307
Fixed
57d299a499155d4b327e341c6024e293b0418243

Affected versions

7.*

7.15.4
7.15.5
7.16.0
7.16.1
7.16.2
7.16.3
7.16.4
7.17.0
7.17.1
7.18.0
7.18.1
7.18.2
7.19.0
7.19.1
7.19.2
7.19.3
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