RHSA-2021:1600 - Security Advisory

Topic

An update for opensc 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 OpenSC set of libraries and utilities provides support for working with smart cards. OpenSC focuses on cards that support cryptographic operations and enables their use for authentication, mail encryption, or digital signatures.

Security Fix(es):

• opensc: heap-based buffer overflow in sc_oberthur_read_file (CVE-2020-26570)
• opensc: stack-based buffer overflow in sc_pkcs15emu_gemsafeGPK_init (CVE-2020-26571)
• opensc: stack-based buffer overflow in tcos_decipher (CVE-2020-26572)

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 8.4 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 - 1830901 - pkcs11-tool --login --change-pin gives error: PKCS11 function C_SetPIN failed: rv = CKR_USER_NOT_LOGGED_IN (0x101)
• BZ - 1877973 - smart card pkcs11 token field with additional padding
• BZ - 1885947 - CVE-2020-26570 opensc: heap-based buffer overflow in sc_oberthur_read_file
• BZ - 1885950 - CVE-2020-26571 opensc: stack-based buffer overflow in sc_pkcs15emu_gemsafeGPK_init
• BZ - 1885954 - CVE-2020-26572 opensc: stack-based buffer overflow in tcos_decipher
• BZ - 1892810 - Enable file caching by default
• BZ - 1895401 - opensc invokes calloc with nmemb*size=0

CVEs

• CVE-2020-26570
• CVE-2020-26571
• CVE-2020-26572

References

• https://access.redhat.com/security/updates/classification/#moderate
• https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.4_release_notes/