Moderate: curl security update

Synopsis

Moderate: curl security update

Type/Severity

Security Advisory: Moderate

Topic

An update for curl is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

The curl packages provide the libcurl library and the curl utility for downloading files from servers using various protocols, including HTTP, FTP, and LDAP.

Security Fix(es):

• curl: double free due to subsequent call of realloc() (CVE-2019-5481)
  
• curl: heap buffer overflow in function tftp_receive_packet() (CVE-2019-5482)
  
• curl: TFTP receive heap buffer overflow in tftp_receive_packet() function (CVE-2019-5436)
  

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.2 Release Notes linked from the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux for x86_64 8 x86_64
• Red Hat Enterprise Linux for IBM z Systems 8 s390x
• Red Hat Enterprise Linux for Power, little endian 8 ppc64le
• Red Hat Enterprise Linux for ARM 64 8 aarch64

Fixes

• BZ - 1710620 - CVE-2019-5436 curl: TFTP receive heap buffer overflow in tftp_receive_packet() function
• BZ - 1749402 - CVE-2019-5481 curl: double free due to subsequent call of realloc()
• BZ - 1749652 - CVE-2019-5482 curl: heap buffer overflow in function tftp_receive_packet()

CVEs

• CVE-2019-5436
• CVE-2019-5481
• CVE-2019-5482

References

• https://access.redhat.com/security/updates/classification/#moderate
• https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.2_release_notes/index