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osvGoogleOSV:DSA-3705-1
HistoryNov 03, 2016 - 12:00 a.m.

curl - security update

2016-11-0300:00:00
Google
osv.dev
12

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.011 Low

EPSS

Percentile

82.7%

Several vulnerabilities were discovered in cURL, an URL transfer library:

  • CVE-2016-8615
    It was discovered that a malicious HTTP server could inject new
    cookies for arbitrary domains into a cookie jar.
  • CVE-2016-8616
    It was discovered that when re-using a connection, curl was doing case
    insensitive comparisons of user name and password with the existing
    connections.
  • CVE-2016-8617
    It was discovered that on systems with 32-bit addresses in userspace
    (e.g. x86, ARM, x32), the output buffer size value calculated in the
    base64 encode function would wrap around if input size was at least
    1GB of data, causing an undersized output buffer to be allocated.
  • CVE-2016-8618
    It was discovered that the curl_maprintf() function could be tricked
    into doing a double-free due to an unsafe size_t multiplication on
    systems using 32 bit size_t variables.
  • CVE-2016-8619
    It was discovered that the Kerberos implementation could be
    tricked into doing a double-free when reading one of the length fields
    from a socket.
  • CVE-2016-8620
    It was discovered that the curl tool’s globbing feature could write
    to invalid memory areas when parsing invalid ranges.
  • CVE-2016-8621
    It was discovered that the function curl_getdate could read out of
    bounds when parsing invalid date strings.
  • CVE-2016-8622
    It was discovered that the URL percent-encoding decode function would
    return a signed 32bit integer variable as length, even though it
    allocated a destination buffer larger than 2GB, which would lead to
    a out-of-bounds write.
  • CVE-2016-8623
    It was discovered that libcurl could access an already-freed memory
    area due to concurrent access to shared cookies. This could lead to
    a denial of service or disclosure of sensitive information.
  • CVE-2016-8624
    It was discovered that curl wouldn’t parse the authority component of
    a URL correctly when the host name part ends with a β€˜#’ character,
    and could be tricked into connecting to a different host.

For the stable distribution (jessie), these problems have been fixed in
version 7.38.0-4+deb8u5.

For the unstable distribution (sid), these problems have been fixed in
version 7.51.0-1.

We recommend that you upgrade your curl packages.

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.011 Low

EPSS

Percentile

82.7%