High severity · published Feb 6, 2019
CVE-2019-3823
libcurl versions from 7.34.0 to before 7.64.0 are vulnerable to a heap out-of-bounds read in the code handling the end-of-response for SMTP
7.5
CVSS
4.1%
EPSS
No
On KEV
Description
libcurl versions from 7.34.0 to before 7.64.0 are vulnerable to a heap out-of-bounds read in the code handling the end-of-response for SMTP. If the buffer passed to `smtp_endofresp()` isn't NUL terminated and contains no character ending the parsed number, and `len` is set to 5, then the `strtol()` call reads beyond the allocated buffer. The read contents will not be returned to the caller.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)4.1% · higher than 91% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CU
curl · The curl Project
7.64.0 · source: vendor
CD
Clustered Data Ontap · Netapp
All versions, or not specified · source: NVD
CO
Communications Operations Monitor · Oracle
3.4; 4.0 · source: NVD
DL
Debian Linux · Debian
9.0 · source: NVD
HS
Http Server · Oracle
12.2.1.3.0 · source: NVD
LI
Libcurl · Haxx
7.34.0 before 7.64.0 · source: NVD
SG
Secure Global Desktop · Oracle
5.4 · source: NVD
UL
Ubuntu Linux · Canonical
14.04; 16.04; 18.04; 18.10 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-3823
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-3823
Third Party Advisory
http://www.securityfocus.com/bid/106950
access.redhat.com
https://access.redhat.com/errata/RHSA-2019:3701
Exploit
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3823
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/pdf/ssa-936080.pdf
Patch
https://curl.haxx.se/docs/CVE-2019-3823.html
lists.apache.org
https://lists.apache.org/thread.html/8338a0f605bdbb3a6098bb76f666a95fc2b2f53f37fa1ecc89f1146f%40%3Cdevnull.infra.apache.org%3E
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