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CVE
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CVE-2017-1000257Date: (C)2017-10-31   (M)2024-02-01


An IMAP FETCH response line indicates the size of the returned data, in number of bytes. When that response says the data is zero bytes, libcurl would pass on that (non-existing) data with a pointer and the size (zero) to the deliver-data function. libcurl's deliver-data function treats zero as a magic number and invokes strlen() on the data to figure out the length. The strlen() is called on a heap based buffer that might not be zero terminated so libcurl might read beyond the end of it into whatever memory lies after (or just crash) and then deliver that to the application as if it was actually downloaded.

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : 9.1CVSS Score : 6.4
Exploit Score: 3.9Exploit Score: 10.0
Impact Score: 5.2Impact Score: 4.9
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: NETWORKAccess Vector: NETWORK
Attack Complexity: LOWAccess Complexity: LOW
Privileges Required: NONEAuthentication: NONE
User Interaction: NONEConfidentiality: PARTIAL
Scope: UNCHANGEDIntegrity: NONE
Confidentiality: HIGHAvailability: PARTIAL
Integrity: NONE 
Availability: HIGH 
  
Reference:
BID-101519
SECTRACK-1039644
DSA-4007
GLSA-201712-04
RHSA-2017:3263
RHSA-2018:2486
RHSA-2018:3558
https://curl.haxx.se/docs/adv_20171023.html

CPE    2
cpe:/o:debian:debian_linux:9.0
cpe:/o:debian:debian_linux:8.0
CWE    1
CWE-119
OVAL    19
oval:org.secpod.oval:def:1800848
oval:org.secpod.oval:def:1600808
oval:org.secpod.oval:def:1800178
oval:org.secpod.oval:def:1800794
...

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