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CVE-2025-8277
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#ICX78O
CVE和安全问题
openeuler-ci-bot
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2025-09-09 20:31
一、漏洞信息 漏洞编号：[CVE-2025-8277](https://nvd.nist.gov/vuln/detail/CVE-2025-8277) 漏洞归属组件：[libssh](https://gitee.com/src-openeuler/libssh) 漏洞归属的版本：0.10.4,0.10.5,0.9.4,0.9.5,0.9.6 CVSS V3.0分值： BaseScore：3.1 Low Vector：CVSS：3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L 漏洞简述： A flaw was found in libssh s handling of key exchange (KEX) processes when a client repeatedly sends incorrect KEX guesses. The library fails to free memory during these rekey operations, which can gradually exhaust system memory. This issue can lead to crashes on the client side, particularly when using libgcrypt, which impacts application stability and availability. 漏洞公开时间：2025-09-09 20:15:30 漏洞创建时间：2025-09-09 20:31:19 漏洞详情参考链接： https://nvd.nist.gov/vuln/detail/CVE-2025-8277 <details> <summary>更多参考(点击展开)</summary> | 参考来源 | 参考链接 | 来源链接 | | ------- | -------- | -------- | | | https://access.redhat.com/security/cve/CVE-2025-8277 | | | | https://bugzilla.redhat.com/show_bug.cgi?id=2383888 | | | | https://bugzilla.redhat.com/show_bug.cgi?id=2383888 | | | | https://access.redhat.com/security/cve/CVE-2025-8277 | | | | https://access.redhat.com/security/cve/CVE-2025-8277 | | | | https://bugzilla.redhat.com/show_bug.cgi?id=2383888 | | | | https://access.redhat.com/security/cve/CVE-2025-8277 | | | | https://access.redhat.com/security/cve/CVE-2025-8277 | | | | https://nvd.nist.gov/vuln/detail/CVE-2025-8277 | | | | https://bugzilla.redhat.com/show_bug.cgi?id=2383888 | | | | https://www.mend.io/vulnerability-database/CVE-2025-8277 | | | | https://www.cve.org/CVERecord?id=CVE-2025-8277 | | | | https://nvd.nist.gov/vuln/detail/CVE-2025-8277 | | | | https://bugzilla.redhat.com/show_bug.cgi?id=2383888 | | | | https://bugzilla.redhat.com/show_bug.cgi?id=2383888 | | | | https://access.redhat.com/security/cve/CVE-2025-8277 | | | | https://security-tracker.debian.org/tracker/CVE-2025-8277 | | | | https://ubuntu.com/security/CVE-2025-8277 | | | | https://www.cve.org/CVERecord?id=CVE-2025-8277 | | | | https://bugzilla.redhat.com/show_bug.cgi?id=2383888 | | | | https://www.libssh.org/security/advisories/CVE-2025-8277.txt | | | | https://access.redhat.com/security/cve/CVE-2025-8277 | | | | https://security-tracker.debian.org/tracker/CVE-2025-8277 | | | | https://access.redhat.com/security/cve/CVE-2025-8277 | | | | https://bugzilla.redhat.com/show_bug.cgi?id=2383888 | | | | https://security-tracker.debian.org/tracker/CVE-2025-8277 | | | | https://access.redhat.com/security/cve/CVE-2025-8277 | | | | https://bugzilla.redhat.com/show_bug.cgi?id=2383888 | | | | https://security-tracker.debian.org/tracker/CVE-2025-8277 | | | | https://access.redhat.com/security/cve/CVE-2025-8277 | | | | https://bugzilla.redhat.com/show_bug.cgi?id=2383888 | | | | https://security-tracker.debian.org/tracker/CVE-2025-8277 | | | | https://access.redhat.com/security/cve/CVE-2025-8277 | | | | https://bugzilla.redhat.com/show_bug.cgi?id=2383888 | | | | https://security-tracker.debian.org/tracker/CVE-2025-8277 | | | | https://access.redhat.com/security/cve/CVE-2025-8277 | | | | https://bugzilla.redhat.com/show_bug.cgi?id=2383888 | | | | https://git.libssh.org/projects/libssh.git/commit/?id=4310a696f2d632c6742678077d703d9b9ff3bc0e | | | | https://git.libssh.org/projects/libssh.git/commit/?id=9ada7aa0e478d5eddcfeb63bcc82b8cfb2699c2f | | | | https://git.libssh.org/projects/libssh.git/commit/?id=c9d95ab0c7a52b231bcec09afbea71944ed0d852 | | | | https://git.libssh.org/projects/libssh.git/commit/?id=ccff22d3787c1355b3f0dcd09fe54d90acc55bf1 | | | | https://git.libssh.org/projects/libssh.git/commit/?id=ffed80f8c078122990a4eba2b275facd56dd43e0 | | | | https://bugzilla.redhat.com/show_bug.cgi?id=2383888 | | | | https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-2342 | | | | https://nvd.nist.gov/vuln/detail/CVE-2025-8277 | | </details> 漏洞分析指导链接： https://gitee.com/openeuler/cve-manager/blob/master/cve-vulner-manager/doc/md/manual.md 漏洞数据来源: 七彩瞬析开源风险感知平台 漏洞补丁信息： <details> <summary>详情(点击展开)</summary> | 影响的包 | 修复版本 | 修复补丁 | 问题引入补丁 | 来源 | | ------- | -------- | ------- | -------- | --------- | | | | https://git.libssh.org/projects/libssh.git/commit/?id=4310a696f2d632c6742678077d703d9b9ff3bc0e | | snyk | | | | https://git.libssh.org/projects/libssh.git/commit/?id=9ada7aa0e478d5eddcfeb63bcc82b8cfb2699c2f | | snyk | | | | https://git.libssh.org/projects/libssh.git/commit/?id=c9d95ab0c7a52b231bcec09afbea71944ed0d852 | | snyk | | | | https://git.libssh.org/projects/libssh.git/commit/?id=ccff22d3787c1355b3f0dcd09fe54d90acc55bf1 | | snyk | | | | https://git.libssh.org/projects/libssh.git/commit/?id=ffed80f8c078122990a4eba2b275facd56dd43e0 | | snyk | </details> 二、漏洞分析结构反馈 影响性分析说明： libssh 库密钥交换逻辑中存在内存耗尽漏洞。当经过身份验证的客户端反复使用错误的 first_kex_packet_follows 猜测值执行密钥更新时，libssh 会分配新的临时密钥对，而不会释放存储在 session->next_crypto 中的旧密钥对。随着时间的推移，这会导致内存泄漏，从而耗尽系统内存并引发客户端拒绝服务 (DoS)。此漏洞影响多个加密后端（libgcrypt、OpenSSL、mbedTLS）中的多种 KEX 算法（Curve25519、ECDH、sntrup761x25519、DH-GEX）。此问题需要经过身份验证的客户端才能触发，不会影响服务器端。受影响的版本:libssh >= 0.6.0 openEuler评分： 3.1 Vector：CVSS：3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L 受影响版本排查(受影响/不受影响)： 1.master(0.10.5):受影响 2.openEuler-20.03-LTS-SP4:受影响 3.openEuler-22.03-LTS-SP3(0.9.6):受影响 4.openEuler-22.03-LTS-SP4(0.9.6):受影响 5.openEuler-24.03-LTS:受影响 6.openEuler-24.03-LTS-Next:受影响 7.openEuler-24.03-LTS-SP1:受影响 8.openEuler-24.03-LTS-SP2:受影响 修复是否涉及abi变化(是/否)： 1.master(0.10.5):否 2.openEuler-20.03-LTS-SP4:否 3.openEuler-22.03-LTS-SP3(0.9.6):否 4.openEuler-22.03-LTS-SP4(0.9.6):否 5.openEuler-24.03-LTS:否 6.openEuler-24.03-LTS-Next:否 7.openEuler-24.03-LTS-SP1:否 8.openEuler-24.03-LTS-SP2:否 原因说明： 1.master(0.10.5):正常修复 2.openEuler-20.03-LTS-SP4:正常修复 3.openEuler-22.03-LTS-SP3(0.9.6):正常修复 4.openEuler-22.03-LTS-SP4(0.9.6):正常修复 5.openEuler-24.03-LTS:正常修复 6.openEuler-24.03-LTS-Next:正常修复 7.openEuler-24.03-LTS-SP1:正常修复 8.openEuler-24.03-LTS-SP2:正常修复 三、漏洞修复 安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2025-2342
一、漏洞信息 漏洞编号：[CVE-2025-8277](https://nvd.nist.gov/vuln/detail/CVE-2025-8277) 漏洞归属组件：[libssh](https://gitee.com/src-openeuler/libssh) 漏洞归属的版本：0.10.4,0.10.5,0.9.4,0.9.5,0.9.6 CVSS V3.0分值： BaseScore：3.1 Low Vector：CVSS：3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L 漏洞简述： A flaw was found in libssh s handling of key exchange (KEX) processes when a client repeatedly sends incorrect KEX guesses. The library fails to free memory during these rekey operations, which can gradually exhaust system memory. This issue can lead to crashes on the client side, particularly when using libgcrypt, which impacts application stability and availability. 漏洞公开时间：2025-09-09 20:15:30 漏洞创建时间：2025-09-09 20:31:19 漏洞详情参考链接： https://nvd.nist.gov/vuln/detail/CVE-2025-8277 <details> <summary>更多参考(点击展开)</summary> | 参考来源 | 参考链接 | 来源链接 | | ------- | -------- | -------- | | | https://access.redhat.com/security/cve/CVE-2025-8277 | | | | https://bugzilla.redhat.com/show_bug.cgi?id=2383888 | | | | https://bugzilla.redhat.com/show_bug.cgi?id=2383888 | | | | https://access.redhat.com/security/cve/CVE-2025-8277 | | | | https://access.redhat.com/security/cve/CVE-2025-8277 | | | | https://bugzilla.redhat.com/show_bug.cgi?id=2383888 | | | | https://access.redhat.com/security/cve/CVE-2025-8277 | | | | https://access.redhat.com/security/cve/CVE-2025-8277 | | | | https://nvd.nist.gov/vuln/detail/CVE-2025-8277 | | | | https://bugzilla.redhat.com/show_bug.cgi?id=2383888 | | | | https://www.mend.io/vulnerability-database/CVE-2025-8277 | | | | https://www.cve.org/CVERecord?id=CVE-2025-8277 | | | | https://nvd.nist.gov/vuln/detail/CVE-2025-8277 | | | | https://bugzilla.redhat.com/show_bug.cgi?id=2383888 | | | | https://bugzilla.redhat.com/show_bug.cgi?id=2383888 | | | | https://access.redhat.com/security/cve/CVE-2025-8277 | | | | https://security-tracker.debian.org/tracker/CVE-2025-8277 | | | | https://ubuntu.com/security/CVE-2025-8277 | | | | https://www.cve.org/CVERecord?id=CVE-2025-8277 | | | | https://bugzilla.redhat.com/show_bug.cgi?id=2383888 | | | | https://www.libssh.org/security/advisories/CVE-2025-8277.txt | | | | https://access.redhat.com/security/cve/CVE-2025-8277 | | | | https://security-tracker.debian.org/tracker/CVE-2025-8277 | | | | https://access.redhat.com/security/cve/CVE-2025-8277 | | | | https://bugzilla.redhat.com/show_bug.cgi?id=2383888 | | | | https://security-tracker.debian.org/tracker/CVE-2025-8277 | | | | https://access.redhat.com/security/cve/CVE-2025-8277 | | | | https://bugzilla.redhat.com/show_bug.cgi?id=2383888 | | | | https://security-tracker.debian.org/tracker/CVE-2025-8277 | | | | https://access.redhat.com/security/cve/CVE-2025-8277 | | | | https://bugzilla.redhat.com/show_bug.cgi?id=2383888 | | | | https://security-tracker.debian.org/tracker/CVE-2025-8277 | | | | https://access.redhat.com/security/cve/CVE-2025-8277 | | | | https://bugzilla.redhat.com/show_bug.cgi?id=2383888 | | | | https://security-tracker.debian.org/tracker/CVE-2025-8277 | | | | https://access.redhat.com/security/cve/CVE-2025-8277 | | | | https://bugzilla.redhat.com/show_bug.cgi?id=2383888 | | | | https://git.libssh.org/projects/libssh.git/commit/?id=4310a696f2d632c6742678077d703d9b9ff3bc0e | | | | https://git.libssh.org/projects/libssh.git/commit/?id=9ada7aa0e478d5eddcfeb63bcc82b8cfb2699c2f | | | | https://git.libssh.org/projects/libssh.git/commit/?id=c9d95ab0c7a52b231bcec09afbea71944ed0d852 | | | | https://git.libssh.org/projects/libssh.git/commit/?id=ccff22d3787c1355b3f0dcd09fe54d90acc55bf1 | | | | https://git.libssh.org/projects/libssh.git/commit/?id=ffed80f8c078122990a4eba2b275facd56dd43e0 | | | | https://bugzilla.redhat.com/show_bug.cgi?id=2383888 | | | | https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-2342 | | | | https://nvd.nist.gov/vuln/detail/CVE-2025-8277 | | </details> 漏洞分析指导链接： https://gitee.com/openeuler/cve-manager/blob/master/cve-vulner-manager/doc/md/manual.md 漏洞数据来源: 七彩瞬析开源风险感知平台 漏洞补丁信息： <details> <summary>详情(点击展开)</summary> | 影响的包 | 修复版本 | 修复补丁 | 问题引入补丁 | 来源 | | ------- | -------- | ------- | -------- | --------- | | | | https://git.libssh.org/projects/libssh.git/commit/?id=4310a696f2d632c6742678077d703d9b9ff3bc0e | | snyk | | | | https://git.libssh.org/projects/libssh.git/commit/?id=9ada7aa0e478d5eddcfeb63bcc82b8cfb2699c2f | | snyk | | | | https://git.libssh.org/projects/libssh.git/commit/?id=c9d95ab0c7a52b231bcec09afbea71944ed0d852 | | snyk | | | | https://git.libssh.org/projects/libssh.git/commit/?id=ccff22d3787c1355b3f0dcd09fe54d90acc55bf1 | | snyk | | | | https://git.libssh.org/projects/libssh.git/commit/?id=ffed80f8c078122990a4eba2b275facd56dd43e0 | | snyk | </details> 二、漏洞分析结构反馈 影响性分析说明： libssh 库密钥交换逻辑中存在内存耗尽漏洞。当经过身份验证的客户端反复使用错误的 first_kex_packet_follows 猜测值执行密钥更新时，libssh 会分配新的临时密钥对，而不会释放存储在 session->next_crypto 中的旧密钥对。随着时间的推移，这会导致内存泄漏，从而耗尽系统内存并引发客户端拒绝服务 (DoS)。此漏洞影响多个加密后端（libgcrypt、OpenSSL、mbedTLS）中的多种 KEX 算法（Curve25519、ECDH、sntrup761x25519、DH-GEX）。此问题需要经过身份验证的客户端才能触发，不会影响服务器端。受影响的版本:libssh >= 0.6.0 openEuler评分： 3.1 Vector：CVSS：3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L 受影响版本排查(受影响/不受影响)： 1.master(0.10.5):受影响 2.openEuler-20.03-LTS-SP4:受影响 3.openEuler-22.03-LTS-SP3(0.9.6):受影响 4.openEuler-22.03-LTS-SP4(0.9.6):受影响 5.openEuler-24.03-LTS:受影响 6.openEuler-24.03-LTS-Next:受影响 7.openEuler-24.03-LTS-SP1:受影响 8.openEuler-24.03-LTS-SP2:受影响 修复是否涉及abi变化(是/否)： 1.master(0.10.5):否 2.openEuler-20.03-LTS-SP4:否 3.openEuler-22.03-LTS-SP3(0.9.6):否 4.openEuler-22.03-LTS-SP4(0.9.6):否 5.openEuler-24.03-LTS:否 6.openEuler-24.03-LTS-Next:否 7.openEuler-24.03-LTS-SP1:否 8.openEuler-24.03-LTS-SP2:否 原因说明： 1.master(0.10.5):正常修复 2.openEuler-20.03-LTS-SP4:正常修复 3.openEuler-22.03-LTS-SP3(0.9.6):正常修复 4.openEuler-22.03-LTS-SP4(0.9.6):正常修复 5.openEuler-24.03-LTS:正常修复 6.openEuler-24.03-LTS-Next:正常修复 7.openEuler-24.03-LTS-SP1:正常修复 8.openEuler-24.03-LTS-SP2:正常修复 三、漏洞修复 安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2025-2342
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