- Issued:
- 2020-04-06
- Updated:
- 2020-04-06
RHSA-2020:1318 - Security Advisory
Synopsis
Important: telnet security update
Type/Severity
Security Advisory: Important
Topic
An update for telnet is now available for Red Hat Enterprise Linux 8.
Red Hat Product Security has rated this update as having a security impact of Important. 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
Telnet is a popular protocol for logging in to remote systems over the Internet. The telnet-server packages include a telnet service that supports remote logins into the host machine. The telnet service is disabled by default.
Security Fix(es):
- telnet-server: no bounds checks in nextitem() function allows to remotely execute arbitrary code (CVE-2020-10188)
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.
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 x86_64 - Extended Update Support 8.1 x86_64
- Red Hat Enterprise Linux for IBM z Systems 8 s390x
- Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.1 s390x
- Red Hat Enterprise Linux for Power, little endian 8 ppc64le
- Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.1 ppc64le
- Red Hat Enterprise Linux for ARM 64 8 aarch64
- Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.1 aarch64
- Red Hat Enterprise Linux Server (for IBM Power LE) - Update Services for SAP Solutions 8.1 ppc64le
- Red Hat Enterprise Linux Server - Update Services for SAP Solutions 8.1 x86_64
Fixes
- BZ - 1811673 - CVE-2020-10188 telnet-server: no bounds checks in nextitem() function allows to remotely execute arbitrary code
CVEs
References
Note:
More recent versions of these packages may be available.
Click a package name for more details.
Red Hat Enterprise Linux for x86_64 8
| SRPM | |
|---|---|
| telnet-0.17-73.el8_1.1.src.rpm | SHA-256: 7c823c652cd91408dee26c472bc43ed494b517d526b6131391afd2c64d40f918 |
| x86_64 | |
| telnet-0.17-73.el8_1.1.x86_64.rpm | SHA-256: fde7ea75cfdb4f61f1d2657b92e75305681e34a0eae3b3d94bc86e0301d7bd92 |
| telnet-debuginfo-0.17-73.el8_1.1.x86_64.rpm | SHA-256: 27333a4108abe2e1dd2dc172dcde2ef049b25f31c23c80be5a7a7928bd5ada50 |
| telnet-debugsource-0.17-73.el8_1.1.x86_64.rpm | SHA-256: f167660d1638fa08cc99c24d184d265766bed226830a21d0648ffb0a6dba72c0 |
| telnet-server-0.17-73.el8_1.1.x86_64.rpm | SHA-256: 812775a8f7b6ca858c2683b9a23be36413bb4f3af02054cb44c0b4ad7eff22b3 |
| telnet-server-debuginfo-0.17-73.el8_1.1.x86_64.rpm | SHA-256: 26ffe58eac36994983c65f731b27b4966bfeab2ab5bf901c14514f564aed34ce |
Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.1
| SRPM | |
|---|---|
| telnet-0.17-73.el8_1.1.src.rpm | SHA-256: 7c823c652cd91408dee26c472bc43ed494b517d526b6131391afd2c64d40f918 |
| x86_64 | |
| telnet-0.17-73.el8_1.1.x86_64.rpm | SHA-256: fde7ea75cfdb4f61f1d2657b92e75305681e34a0eae3b3d94bc86e0301d7bd92 |
| telnet-debuginfo-0.17-73.el8_1.1.x86_64.rpm | SHA-256: 27333a4108abe2e1dd2dc172dcde2ef049b25f31c23c80be5a7a7928bd5ada50 |
| telnet-debugsource-0.17-73.el8_1.1.x86_64.rpm | SHA-256: f167660d1638fa08cc99c24d184d265766bed226830a21d0648ffb0a6dba72c0 |
| telnet-server-0.17-73.el8_1.1.x86_64.rpm | SHA-256: 812775a8f7b6ca858c2683b9a23be36413bb4f3af02054cb44c0b4ad7eff22b3 |
| telnet-server-debuginfo-0.17-73.el8_1.1.x86_64.rpm | SHA-256: 26ffe58eac36994983c65f731b27b4966bfeab2ab5bf901c14514f564aed34ce |
Red Hat Enterprise Linux for IBM z Systems 8
| SRPM | |
|---|---|
| telnet-0.17-73.el8_1.1.src.rpm | SHA-256: 7c823c652cd91408dee26c472bc43ed494b517d526b6131391afd2c64d40f918 |
| s390x | |
| telnet-0.17-73.el8_1.1.s390x.rpm | SHA-256: 5a6f811f6d21688d8f8df0c36562adf99b50e84a63b87351e883197a5ad68766 |
| telnet-debuginfo-0.17-73.el8_1.1.s390x.rpm | SHA-256: bbed0fbb042e95411d54c35f01f9d61f17b2967199865a5a5850315d1929ea43 |
| telnet-debugsource-0.17-73.el8_1.1.s390x.rpm | SHA-256: e29ba6d123b6b13299c979a81e3845fbdda4b788486de198fa19df593d7f0944 |
| telnet-server-0.17-73.el8_1.1.s390x.rpm | SHA-256: a52b3842fb58e53b5cc4ca71bd23d7a28d3917001cb7105f7b60a11b4f54b04b |
| telnet-server-debuginfo-0.17-73.el8_1.1.s390x.rpm | SHA-256: 29f3b6ee62cc6ee67ade246bf0c3edab1b42a9f3d07b0d91d1e9e661a62338b5 |
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.1
| SRPM | |
|---|---|
| telnet-0.17-73.el8_1.1.src.rpm | SHA-256: 7c823c652cd91408dee26c472bc43ed494b517d526b6131391afd2c64d40f918 |
| s390x | |
| telnet-0.17-73.el8_1.1.s390x.rpm | SHA-256: 5a6f811f6d21688d8f8df0c36562adf99b50e84a63b87351e883197a5ad68766 |
| telnet-debuginfo-0.17-73.el8_1.1.s390x.rpm | SHA-256: bbed0fbb042e95411d54c35f01f9d61f17b2967199865a5a5850315d1929ea43 |
| telnet-debugsource-0.17-73.el8_1.1.s390x.rpm | SHA-256: e29ba6d123b6b13299c979a81e3845fbdda4b788486de198fa19df593d7f0944 |
| telnet-server-0.17-73.el8_1.1.s390x.rpm | SHA-256: a52b3842fb58e53b5cc4ca71bd23d7a28d3917001cb7105f7b60a11b4f54b04b |
| telnet-server-debuginfo-0.17-73.el8_1.1.s390x.rpm | SHA-256: 29f3b6ee62cc6ee67ade246bf0c3edab1b42a9f3d07b0d91d1e9e661a62338b5 |
Red Hat Enterprise Linux for Power, little endian 8
| SRPM | |
|---|---|
| telnet-0.17-73.el8_1.1.src.rpm | SHA-256: 7c823c652cd91408dee26c472bc43ed494b517d526b6131391afd2c64d40f918 |
| ppc64le | |
| telnet-0.17-73.el8_1.1.ppc64le.rpm | SHA-256: 73919f0e7c33b3d2817ecb0a8407cb3eebcbd06b2eca3ee36c713e888150d21b |
| telnet-debuginfo-0.17-73.el8_1.1.ppc64le.rpm | SHA-256: b464266c55d8e4f85ecbaf67b8d0e5b609d50df31b1562895d469f5055b4321f |
| telnet-debugsource-0.17-73.el8_1.1.ppc64le.rpm | SHA-256: 2ff35ae388198d585a9769905fc0379cda7f0809212f169b1ed78859c8f42925 |
| telnet-server-0.17-73.el8_1.1.ppc64le.rpm | SHA-256: abb52785527360e995816296dc63316a57b66c4e26a73620230cd2046f319f8f |
| telnet-server-debuginfo-0.17-73.el8_1.1.ppc64le.rpm | SHA-256: ac43bd9839bcdfe34280239680f6290e53f71f7ddd5e8e8485513d654f3b0ab3 |
Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.1
| SRPM | |
|---|---|
| telnet-0.17-73.el8_1.1.src.rpm | SHA-256: 7c823c652cd91408dee26c472bc43ed494b517d526b6131391afd2c64d40f918 |
| ppc64le | |
| telnet-0.17-73.el8_1.1.ppc64le.rpm | SHA-256: 73919f0e7c33b3d2817ecb0a8407cb3eebcbd06b2eca3ee36c713e888150d21b |
| telnet-debuginfo-0.17-73.el8_1.1.ppc64le.rpm | SHA-256: b464266c55d8e4f85ecbaf67b8d0e5b609d50df31b1562895d469f5055b4321f |
| telnet-debugsource-0.17-73.el8_1.1.ppc64le.rpm | SHA-256: 2ff35ae388198d585a9769905fc0379cda7f0809212f169b1ed78859c8f42925 |
| telnet-server-0.17-73.el8_1.1.ppc64le.rpm | SHA-256: abb52785527360e995816296dc63316a57b66c4e26a73620230cd2046f319f8f |
| telnet-server-debuginfo-0.17-73.el8_1.1.ppc64le.rpm | SHA-256: ac43bd9839bcdfe34280239680f6290e53f71f7ddd5e8e8485513d654f3b0ab3 |
Red Hat Enterprise Linux for ARM 64 8
| SRPM | |
|---|---|
| telnet-0.17-73.el8_1.1.src.rpm | SHA-256: 7c823c652cd91408dee26c472bc43ed494b517d526b6131391afd2c64d40f918 |
| aarch64 | |
| telnet-0.17-73.el8_1.1.aarch64.rpm | SHA-256: 3a90d8a5b8731f2cfff0a615ac7ae74202c7ff285340a6e71471a273c4a0a647 |
| telnet-debuginfo-0.17-73.el8_1.1.aarch64.rpm | SHA-256: fa44e1998de422f564032a096e1c811f35e86e6fd0ee35c0e52367aa7912248e |
| telnet-debugsource-0.17-73.el8_1.1.aarch64.rpm | SHA-256: 8e771b8ee30727304dec2e07e19022e7a5a2b43aa07c267894587d3c094d9aec |
| telnet-server-0.17-73.el8_1.1.aarch64.rpm | SHA-256: 320f2ff6a8bba3cd44887f3bc6d4411367ffe29a0ff72b74639731f60c2ad4d5 |
| telnet-server-debuginfo-0.17-73.el8_1.1.aarch64.rpm | SHA-256: 97e23655927b9d1e7163813372931489b25c73e13baf428c1da48c16779e5e7c |
Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.1
| SRPM | |
|---|---|
| telnet-0.17-73.el8_1.1.src.rpm | SHA-256: 7c823c652cd91408dee26c472bc43ed494b517d526b6131391afd2c64d40f918 |
| aarch64 | |
| telnet-0.17-73.el8_1.1.aarch64.rpm | SHA-256: 3a90d8a5b8731f2cfff0a615ac7ae74202c7ff285340a6e71471a273c4a0a647 |
| telnet-debuginfo-0.17-73.el8_1.1.aarch64.rpm | SHA-256: fa44e1998de422f564032a096e1c811f35e86e6fd0ee35c0e52367aa7912248e |
| telnet-debugsource-0.17-73.el8_1.1.aarch64.rpm | SHA-256: 8e771b8ee30727304dec2e07e19022e7a5a2b43aa07c267894587d3c094d9aec |
| telnet-server-0.17-73.el8_1.1.aarch64.rpm | SHA-256: 320f2ff6a8bba3cd44887f3bc6d4411367ffe29a0ff72b74639731f60c2ad4d5 |
| telnet-server-debuginfo-0.17-73.el8_1.1.aarch64.rpm | SHA-256: 97e23655927b9d1e7163813372931489b25c73e13baf428c1da48c16779e5e7c |
Red Hat Enterprise Linux Server (for IBM Power LE) - Update Services for SAP Solutions 8.1
| SRPM | |
|---|---|
| telnet-0.17-73.el8_1.1.src.rpm | SHA-256: 7c823c652cd91408dee26c472bc43ed494b517d526b6131391afd2c64d40f918 |
| ppc64le | |
| telnet-0.17-73.el8_1.1.ppc64le.rpm | SHA-256: 73919f0e7c33b3d2817ecb0a8407cb3eebcbd06b2eca3ee36c713e888150d21b |
| telnet-debuginfo-0.17-73.el8_1.1.ppc64le.rpm | SHA-256: b464266c55d8e4f85ecbaf67b8d0e5b609d50df31b1562895d469f5055b4321f |
| telnet-debugsource-0.17-73.el8_1.1.ppc64le.rpm | SHA-256: 2ff35ae388198d585a9769905fc0379cda7f0809212f169b1ed78859c8f42925 |
| telnet-server-0.17-73.el8_1.1.ppc64le.rpm | SHA-256: abb52785527360e995816296dc63316a57b66c4e26a73620230cd2046f319f8f |
| telnet-server-debuginfo-0.17-73.el8_1.1.ppc64le.rpm | SHA-256: ac43bd9839bcdfe34280239680f6290e53f71f7ddd5e8e8485513d654f3b0ab3 |
Red Hat Enterprise Linux Server - Update Services for SAP Solutions 8.1
| SRPM | |
|---|---|
| telnet-0.17-73.el8_1.1.src.rpm | SHA-256: 7c823c652cd91408dee26c472bc43ed494b517d526b6131391afd2c64d40f918 |
| x86_64 | |
| telnet-0.17-73.el8_1.1.x86_64.rpm | SHA-256: fde7ea75cfdb4f61f1d2657b92e75305681e34a0eae3b3d94bc86e0301d7bd92 |
| telnet-debuginfo-0.17-73.el8_1.1.x86_64.rpm | SHA-256: 27333a4108abe2e1dd2dc172dcde2ef049b25f31c23c80be5a7a7928bd5ada50 |
| telnet-debugsource-0.17-73.el8_1.1.x86_64.rpm | SHA-256: f167660d1638fa08cc99c24d184d265766bed226830a21d0648ffb0a6dba72c0 |
| telnet-server-0.17-73.el8_1.1.x86_64.rpm | SHA-256: 812775a8f7b6ca858c2683b9a23be36413bb4f3af02054cb44c0b4ad7eff22b3 |
| telnet-server-debuginfo-0.17-73.el8_1.1.x86_64.rpm | SHA-256: 26ffe58eac36994983c65f731b27b4966bfeab2ab5bf901c14514f564aed34ce |
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